So let me just add that I've been using Plex for years to play 4k HDR files for myself and transcoded versions for family and friends.
And it works beautifully!
No complaints really. There's clients for all devices family has, I have all my files, I can share to friends, etc...
Yes, they've also added a new streaming service. I really don't see the issue, just disable it if you don't want it.
For me Plex has always worked fine. Good product.