Honestly? No
The good news is that we have a lot less of the dumbfuckery where people think the pinnacle of their life is a chain of meme posts.
But I think the decentralized and duplicated nature of lemmy prevents any meaningful conversations. People who just want an echo chamber stay in their version of a board and rely on moderators to scorched earth anything that doesn't fit a narrative. But it also means that people who DO want a conversation might never even see each other or not want to repeat themselves. Interesting point made in the world version of a thread but you tend to hang out in the zip? Yeah...
Which... is kind of message boards. Reddit was "successful" because it was effectively a single vbulletin site that EVERYONE was on so you basically only had one or two gaming forums and so forth. Whereas this is back to the days of usenet and everyone having a phpbb. You might recognize some folk from the Beyond Unreal forums at TTLG but those are different forums with different "cultures" and so forth.
That said: I can't help but gush over Mastodon. That is increasingly my favorite social media... ever? Because lemmy very much feels like a bunch of people who can't get over their ex and keep bringing them up in ever increasingly weird ways. Whereas Mastodon feels like everyone collectively said "Fuck twitter. I always hated it. Let's actually make a good town hall site" and... we kind of did. Yeah, you still have brigading dumbasses and a lot of the decentralization issues. But you also have people who actually respond to comments and have discussions. And while you still have the inherent flaws of trying to convey a point in a microblog, you also have a lot more "Wait, what are you trying to say?" kind of comments.
And... I am not sure what "lemmy" can really do. I think we have all collectively agreed to block certain instances (whether at the instance level or accounts blocking them ourselves) which helps with the... terrorist threats. But unless "lemmy" can decide to stop talking about reddit and stop trying to reinvent reddit... it is never going to be a place worth developing a community at. Shitposting and one off questions? Sure. But it won't be somewhere that you actually go to interact with other human beings.