Added Sep 26 2019: I'm not going to do an analysis or summary of these responses – but I and others think it would be interesting to do so. If you'd like to do so, I'd welcome that and will link your summary/analysis in the top of this post here. All the data is accessible in the Google Spreadsheet below.
Submit your answers anonymously here: https://docs.google.com/forms/d/e/1FAIpQLSfiUmvT4Z6hXIk_1xAh9u-VcNzERUPyWGmJjJQypZb943Pjsg/viewform?usp=sf_link
See the results here: https://docs.google.com/forms/d/e/1FAIpQLSfiUmvT4Z6hXIk_1xAh9u-VcNzERUPyWGmJjJQypZb943Pjsg/viewanalytics?usp=form_confirm
And you can see all responses beyond just the first 100 here: https://docs.google.com/spreadsheets/d/1D-2QX9PiiisE2_yQZeQuX4QskH57VnuAEF4c3YlPJIA/edit?usp=sharing
Inspired by: http://www.paulgraham.com/say.html
Let's start with a test: Do you have any opinions that you would be reluctant to express in front of a group of your peers?
If the answer is no, you might want to stop and think about that. If everything you believe is something you're supposed to believe, could that possibly be a coincidence? Odds are it isn't. Odds are you just think what you're told.
Why this is a valuable exercise
Some would ask, why would one want to do this? Why deliberately go poking around among nasty, disreputable ideas? Why look under rocks?
I do it, first of all, for the same reason I did look under rocks as a kid: plain curiosity. And I'm especially curious about anything that's forbidden. Let me see and decide for myself.
Second, I do it because I don't like the idea of being mistaken. If, like other eras, we believe things that will later seem ridiculous, I want to know what they are so that I, at least, can avoid believing them.
Third, I do it because it's good for the brain. To do good work you need a brain that can go anywhere. And you especially need a brain that's in the habit of going where it's not supposed to.
Great work tends to grow out of ideas that others have overlooked, and no idea is so overlooked as one that's unthinkable. Natural selection, for example. It's so simple. Why didn't anyone think of it before? Well, that is all too obvious. Darwin himself was careful to tiptoe around the implications of his theory. He wanted to spend his time thinking about biology, not arguing with people who accused him of being an atheist.
Thanks to Khorton for the suggestion to do it as a Google form.
You're definitely right that most grant-making organisations do not make much use of such disclaimers. However, I think this mainly because it just doesn't come up - most grantmaking occurs between people who do not know each other much socially, and are often older and married anyway.
In contrast the EA community, especially in the bay area, is extremely tight socially, and also exhibits a high level of promiscuity. As such the risk for decisions being unduly influenced by personal relationships is significantly higher. For example, back in 2016 OpenPhil revealed that they had advisors living with people they were evaluating, and evaluatees in relationships with OpenPhil staff (source). OpenPhil no longer seem to publish their conflicts of interest, but I suspect similar issues still occur. Separately, I have been told that some people in the bay area community explicitly use sexual relationships to make connections and influence the flow of funds from donors to workers and projects, which seems to raise severe concerns about objectivity and bias, as well as the potential for abuse (in both directions). I would be very concerned by either of these in the private sector, and see little reason to hold EAs to a lower standard.
Donors in general are subject to a significant information asymmetry and have few defenses against improper behaviour from organisations, especially in areas where concrete outputs are scarce. Explicit declarations that specific suspect conduct has not taken place represents a minimum level of such protection.
With regard your bullet points, I think a good analogy would be disclaimers in financial research. Every piece of financial research comes with multiple pages of disclaimers at the end, including a promise from the authors that the piece represents their true opinions and various sections about financial conflicts of interest. Perhaps the first analysts subject to these requirements found them intrusive - however by now they are a totally automated and unremarked-upon part of the process. I would expect the same to apply here, partly because every disclosure should ideally say the same thing: "None of the judges were in a relationship with anyone they evaluated."
Indeed, the disclosure requirements in the financial sector cover cases like these quite directly. For example the CFA's Ethical and Professional Standards (2016):
and from 2014:
In this case, donors and potential donors to an EA organisation are the equivalent of clients and potential clients of an investment firm, and I think a personal relationship with a grantee could reasonably be expected to impair judgement.
A case I personally came across involved two flatmates who both worked for different divisions in the same bank (Research and Sales&Trading). Because the bank (rightfully) took the separation of these two functions very seriously, HR applied a lot of pressure to them and they found alternative living arrangements.
Another example is lotteries, where the family members of employees are not allowed to participate at all, because their winning would risk bringing the lottery into disrepute:
This is perhaps slightly unfair, as they did not choose the employment of their family members, but this seems to be a small cost. The number of lottery family members is very small compared to the lottery-ticket-buying public, and there are other forms of gambling open to them. And the costs here should be smaller still, as all I am suggesting is disclosure, a much milder policy than prohibition.
I did appreciate that the fund's most recent write-up does take note of potential conflicts of interest, along with a wealth of other details. I could not find the sort of conflict of interest policy you suggested on their website however.