Lemmy allows you to edit titles in your posts. Reddit doesn't, for some obscure reason, allow this.
Lemmy's community or communities rather, don't yet feel like anything is as bad as what you'd expect from Reddit. You may know what I'm talking about but as a reminder, I'm talking about posts that don't quite seem as open minded. I call them small-talk, no-where kind of posts. The kind of posts that equals to a 4 line conversation with anyone in person, on the phone or even online. Never makes it past 'how are you' stages.
The nature of the beast though has yet to take effect because it's not strictly a Reddit thing, it's more of an internet thing, overall. I presume once Lemmy does reach triple digits in the thousands, we could expect to see some behavior that we don't like seeing. However...
Lemmy has a registration that can't be as abused as Reddit's is. I call Reddit's registration system, a machine gun for alts. Because of how stupid easy it is, to make an account. If you wanted to, you can stockpile a 100 Reddit accounts on just one e-mail while ignoring verification. And there isn't anything on Reddit that stops you from this either, just fill a few throwaway forms and boom, you're back on. Go to AskReddit, make a few empty comments, gain some karma or just bide your time a little until you resume your trolling antics again.
Easy to navigate, a nice little list of communities to hop to.
An engaging community, nothing feels too bait-y, things feel fairly contained. I don't feel as much as I did with reddit where anything I said that wasn't looking to instigate an argument, will be antagonized in any way. Reddit has a very spiteful hivemind as I'm sure we've all felt it by the DdoS attacks which is something Reddit users have been known to do in the past.
We need more places like Lemmy.
The key difference the Fediverse has, is the easy ability to associate only with those you wish to. I expect big parts of Lemmy will turn into exactly what you describe, but this is natural and desirable if it is what people actually want. And many people do, I loved it as a teen. I am sure I was not that unique.
However, it can much more easily have smaller, healthier communities as well, that themselves will benefit from their own interconnectedness.
The Fediverse never will be, nor should it be, just one thing. It should be all the things. This could eventually remove those people from the harmful effects the tech giants currently have.