Yes, but it’s still way easier to pull off having multiple accounts and evading bans on lemmy
Comparing lemmy to 4chan is completely disingenuous. It has virtually no moderation by design. That’s what its whole reputation is staked on.
Discord is also a different kind of platform. You can’t read into servers you aren’t a part of, or participate in them. The dynamics there are very different, and most servers are invite only.
To me one of reddits main problems is their moderators and how overzealous they can be. I am relieved to see lemmy doesn’t give mods or site admins as much power over others, even if that causes problems from time to time. Someone else might see it differently though.