I'd like to take a moment to mourn what the discourse doesn't have.
It's unfortunate that we don't trust eachother.
There will be no enumeration by me right now (you're encouraged to try in the comments) of the vastly different types of anonymous forum participation. The variance in reasons people have for not committing posts and comments is broad, and I would miss at least one.
Separately, I'd like to take a moment to mourn the fact that this short note about movement drama can be expected to generate more comments than my effortposts about my actual work can hope to get.
But I think it's important to point out, for anyone who hasn't noticed yet, that the presence of burner accounts is a signal we're failing at something.
Think of how much more this excellent comment of Linch's would have meant if the OP was out and proud.
I would like to say that I feel like a coward when I hold my tongue for reputational considerations, without anyone who's utilized a burner account hearing me and responding with "so you're saying I'm a coward". There are too many reasons out there for people to partake in burner accounts for me to say that.
I'm normally deeply sympathetic to romantic discussions of the ancient internet values, in which anonymity was a weapon against the biases of status and demographic. I usually lament the identityfication of the internet that comes up around the time of facebook. But there is a grave race to the bottom of integrity standards when we tolerate infringements on anyone's ability - or indeed their inclination - to tell the truth as they see it and own the consequences of standing up and saying it.
I'm much more saying "if burner account users are correctly or rationally responding to the environment (with respect to whatever risk tolerance they have), then that's a signal to fix the environment" than I am saying "burner account users are not correct or rational". But I think at the margin, some of the burnerified comments I've seen have crossed the line into, I say as I resist a perceptible urge to say behind a burner account, actual cowardice.
I agree with you that filtering for alignment is important. The mainstream non-profit space speaks a lot about filtering for "mission fit" and I think that's a similar concept. Obviously it would be hard to run an animal advocacy org with someone chowing down on chicken sandwiches every day for lunch in the organization cafeteria.
But my hot take for the main place I see this go wrong in EA: Some EAs I have talked to, including some quite senior ones, overuse "this person may be longtermist-adjacent and seem to be well-meaning but they just don't give me enough vibes that they're x-risk motivated and no I did not actually ask them about it or press them about this" -> "this is not a person I will work with" as a chain of reasoning, to the point of excluding people with nuanced views on longtermism (or just confused views who could learn and improve) and this makes the longtermist community more insular and worse. I think PELTIV and such give a similar take of making snap judgements from afar without actually checking them against reality (though there are other clear problems also).
My other take about where this goes wrong is less hot and basically amounts to "EA still ignores outside expertise too much because the experts don't give off enough EA vibes". If I recall correctly, nearly all opinions on wild animal welfare in EA had to be thrown out after discussion with relevant experts.