Why don’t you post the solution publicly so people know how to get subtitles working?

I am not asking you to DM me. My request is to go to support in Jellyfin discord where we can discuss the issue. I agree jellyfin is not free from issue. But when you say “too bad subtitles don’t work” , it’s leaves the rest of us confused. The issues you listed down, might be true in specific cases for example AAS subtitles not rendering correctly in VLC on Android TV. You see how specific the issue is ? In your case , we don’t know what’s up. Someone wanting to try jellyfin (who is not affected by your issue) would shy away from even trying.

In any case, I had no intention to accuse you or offend you in any way. I apologise if I came out strong.