It does have all the worst qualities of Reddit, including the hate speech and the hateful downvotes, I saw many people on Reddit heavily downvoted in unrelated threads because they were openly trans on their profile. I’ve unfortunately seen the same thing on Lemmy from Lemmy.world comment sections and that’s just in the first 5 days of being here.
Admins indeed can deal with these users, by deleting their content from their instances, and banning them from the site, if they are homed on that specific instance they get banned everywhere when that happens. So it can be dealt with but it takes work from our admins, and since these are communities run by real people and not monolithic corporations, we can speak up and make a difference. Reach out to these admins who are real people.