I run a few groups, like @fediversenews@venera.social, mostly on Friendica. It's okay, but Friendica resembles Facebook Groups more than Reddit. I also like the moderation options that Lemmy has.
Currently, I'm testing jerboa, which is an Android client for Lemmy. It's in alpha, has a few hiccups, but it's coming along nicely.
Personally, I hope the #RedditMigration spurs adoption of more Fediverse server software. And I hope Mastodon users continue to interact with Lemmy and Kbin.
All that said, as a mod of a Reddit community (r/Sizz) I somewhat regret giving Reddit all that content. They have nerve charging so much for API access!
Hopefully, we can build a better version of social media that focuses on protocols, not platforms.
I’m a software dev, early adopter of most techs I find, and I had like more than a week trying stuff out to replace he-who-shall-not-be-nameddit. After some trial and error, and wefwef, I’m confident I found a replacement. But I seriously doubt most people will adopt it. I think the communities will diverge, and I will think of Lemmy as the new reddit and reddit as the new Instagram anyway.