Jellyfin has certainly improved a lot since I started using it a couple of years ago. I remember when the web UI was much slower and posters would fail to load. Things are faster now and more consistent.

With that said, there are still some big issues that I encounter. Adding a new show has its individual episodes count towards the "Latest" item limit so a single big show can completely dominate that section with a single entry. Adding multiple episodes of a show simultaneously results in randomly ordered "new content" notifications which look really bad when output in something like Discord notifications. The web app has a pretty dated UX.

I think it's important to be real when talking about something like Jellyfin so it's not misrepresented. It's a rough product that is constantly being improved, albeit slowly.

There's also a whole other conversation to be had about the job of self-hosting Jellyfin vs. letting Plex snoop on your activity and habits.