Especially for minor things, sometimes they just kind of come off as absurd. It's as if they're trying to show how uptight they can be without the full ramifications.
By then, the singularity would have taken over. Yet you'd still have that one person on top of the rubble say "nope, the ban is still in effect for another ten years".
It reminds me of all those judges who sentence criminals to a thousand years in prison to show how angry they are. Though even then, their bodies are removed from prison right after they die. A Lemmy ban, on the other hand.