Not really, their users make alts everywhere else too. It’s also quite easy just to keep setting up new instances too.
Deal with them just like regular trolls. You shouldn’t be like the Muskrat cultists who think content moderation is useless and thus should be given up on. I understand, I suffered from activism burnout on the regular (one was right in the middle of an election campaign), but one should not give up easily.
That’s not at all what I am saying. I am saying it’s easier to do moderation on more centralised platforms like Reddit, because moderators simply have more power and more tools there. The flip side of that being that it makes it easier for moderators and admins to abuse and ban people without recourse. I am not saying moderation is pointless at all, just that it’s easier with one platform than the other. There are pros and cons to both models.
I would argue being open source and decentralised are major advantages of Lemmy and are more than sufficient to justify its existence. Just that it also isn’t perfect either. There are always trade-offs to be made when designing a platform, and that’s something you should always bear in mind.
Centralized platforms are also prone to the same kind of attacks. Kiwifarms and especially its users’ offshoot Discord and Matrix chatrooms are good example for this. Hell, even 4chan was infamous for organizing troll campaigns, first just “4 teh lulz”, then people turned the site into their personal army.