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.
Most centralized systems have a ton of redundancy built in as well. Huge web platforms especially have massive amounts of redundancy - some content is replicated hundreds of times and spread around the globe to ensure that users everywhere will have fast response times.
So in fact, the real difference between a centralized platform and something like Lemmy comes down to whether or not here is a single corporate entity who has full contol over the course of the platform or not.