To be honest I don’t see the issue with multiple similar communities. It’s no different to how Reddit would have many subreddits with similar themes. For example on Reddit there were dozens of Star Wars subs so people would subscribe to them all
I use Kubuntu for the kde plasma desktop. It made the switch from windows much easier. I dual boot and occasionally use windows if I want to play a game which doesn’t have Linux support
I’ve tried all the apps and honestly they are all great. I use memmy mainly as I much prefer the UI. The only app I haven’t tried is mlem because it would not let me sign in and gave me an error whenever I tried
As far as I’m aware this was possible before the api changes. I’m not sure it’s possible anymore