What will make me return to reading Reddit is all those old posts and comments on very specific topics. It doesn't mean I'll stop using Lemmy (especially if some communities I follow migrate here entirely), but there's no proper replacement for Reddit yet.
Also, I've found no app for Lemmy working on Android 7. For Reddit, I'm using Stealth: it's incredibly useful that you can create multiple pseudo-accounts with different subscription lists and saved posts without ever logging in or having an account. API changes are a sad development, but Stealth has an option to work by scraping old.reddit.com
- unless they happen to delete it, of course.