Given there are usernames like "throwaway" and "throwaway2," and knowing the EA Forum, and its precursor, LessWrong, I'm confident there is only be one account under the username "anonymous," and that all the comments on this post using this account are coming from the same individual.
I don't feel comfortable sharing the reasons for remaining anonymous in public, but I would be happy to disclose my identity to a trustworthy person to prove that this is my only fake account.
Thanks for making this post, it was long overdue.
Further facts
Recruitment transparency
Overall, I am under the impression that a majority of EAs think that Leverage is quite culty and ineffective. Leverage staff usually respond by claiming that their unpublished research is valuable, but the insiders mentioned above seemed to disagree.
If someone has strong counterevidence to this skeptical view of Leverage, I would be very interested and open to changing my mind.
I could list a number of specific details, but not without violating the preferences of the people who shared their experiences with me, and not without causing even more unnecessary drama.
These details wouldn't make for a watertight case that they're a "cult". I deliberately didn't claim that Leverage is a cult. (See also this.) But the details are quite alarming for anyone who strives to have well-calibrated beliefs and an open-minded and welcoming EA community. I do think their cultishness led to unnecessary harm to well-meaning, young people who wanted to do good in the world.