Back when the big flock from Reddit to Lemmy took place, I used this account to post this Unpopular Opinion:
Erasing your Reddit history is an asshole move, and does not really help “the cause”

If you check the profiles of the most ardent anti-Reddit voices from that thread, you would notice that most of them disappeared from Lemmy shortly after that, or a few months later at best.

Where did they go? Back to Reddit of course.

Lessons learned? Beware that the loudest most uncompromising voices regarding a cause when enthusiasm for it is at its peak, are often the ones who are the least committed to it.

Do note that neither the reaction back then, nor this retrospect came as a surprise to me.