Tbh, Dead Internet Theory applies almost everywhere.
Lemmy might just be far too small for it to work here. (For comparison, measured by activity and monthly active users, Lemmy is smaller than both the Linus Tech Tips form and the Crackberry forum.)
Complaining about the ban does about as much good on Lemmy as it does on Reddit.
That said, the anti-multiaccount checks are far worse on Lemmy than on Reddit.