Tachiyomi was so good that I literally kept my old android around only for that app.

Suwayomi still exists but it relies on Tachiyomi extensions so I don't know how useful it's going to be going forward.

Frick Kakao!!

My go-to is an arch container just because I like to have rolling releases, access to AUR, and I like pacman. I wouldn't overthink it though. If the fedora container works for you, then it's fine.

They are great, I use them over the native package whenever I can on Fedora Workstation. Can't say I've had any issues with them in recent years.

I really like Setzer. It does everything I need from a latex editor and looks much nicer than other editors I have used on windows imo