Honestly it just works and works well. I had all sorts of issues with Plex with subtitles not working and weird transcoding issues where red blocks would randomly appear. Also I found Plex kinda ugly tbh. I tried Jellyfin and it seemed a bit ‘hacky’ but this was a few years ago so maybe it’s improved but I currently have no reason to try it again. If you’re using Plex/Jellyfin/Emby you are most likely pirating media so worrying about GPL violations is probably not top of the list.
I opted out by just writing gdpr in the reason box. Nothing else, just gdpr. It got accepted.