This post wanted data, and I’m looking forward to that … but here is another anecdotal perspective.
I was introduced to EA several years ago via a Life You Can Save. I learned a lot about effective, evidence-based giving, and “GiveWell approved” global health orgs. I felt that EA had shared the same values as the traditional “do good” community, just even more obsessed with evidence-based, rigorous measurement. I changed my donation strategy accordingly and didn’t pay much more attention to EA community for a few years.
But in 2020, I checked back in to EA and attended an online conference. I was honestly quite surprised that very little of the conversation was about how to measurably help the world’s poor. Everyone I talked to was now focusing on things like AI Safety and Wild Animal Welfare. Even folks that I met for 1:1s, whose bio included global health work, often told me that they were “now switching to AI, since that is the way to have real impact.” Even more surprising was the fact that the most popular arguments weren’t based on measurable evidence, like GiveWell, but based on philosophical arguments and thought experiments. The “weirdness” of the philosophical arguments was a way to signal EA-ness; lack of empirical grounding wasn’t a dealbreaker anymore.
Ultimately I misjudged what the “core” principles of EA were. Rationalism and logic were a bigger deal than empiricism. But in my opinion, the old EA was defined by citing mainstream RCT studies to defend an intervention that was currently saving X lives. The current EA is defined by citing esoteric debates between Paul Christiano and Eliezer, which themselves cite EA-produced papers… all to decide which AI Safety org is actually going to save the world in 15 years. I’m hoping for a rebalance towards the old EA, at least until malaria is actually eradicated!

Please note that the Twitter thread linked in the first paragraph starts with a highly factually inaccurate claim. In reality, at EAGxBoston this year there were five talks on global health, six on animal welfare, and four talks and one panel on AI (alignment plus policy). Methodology: I collected these numbers by filtering the official conference app agenda by topic and event type.
I think it's unfortunate that the original tweet got a lot of retweets / quote-tweets and Jeff hasn't made a correction. (There is a reply saying "I should add, friend is not 100% sure about the number of talks by subject at EAGx Boston," but that's not an actual correction, and it was posted as a separate comment so it's buried under the "show more replies" button.)
This is not an argument for or against Jeff's broader point, just an attempt to combat the spread of specific false claims.
Here's a corrective: https://twitter.com/JeffJMason/status/1511663114701484035?t=MoQZV653AZ_K1f2-WVJl7g&s=19
Unfortunately I can't do anything about where it shows up. Elon needs to get working on that edit button.
Jeff should not delete the tweet
Jeff should delete the tweet
Sorry I've made an edit to this effect. An oversight on my part.
This is exactly why I wish I could allow others to edit my posts - then you could edit it too!