Because it’s continuing the trend of focusing on live free channel streaming, finding things to watch on other streaming services, social media-esque interactions with other users, and other shit I don’t care about.
I just want something that will stream my media from my NAS to whatever I’m trying to watch it on, and do it well.
If it does the basic things that I want it to do well without being surrounded by the bloat of useless profit-driven features, and it’s FOSS, then it isn’t inferior to me.
The only meaningful update (to me) Plex has had in the past few years has been forcing everyone to switch from using TVDB to their inferior metadata agent.