They did what now? I've been using Plex on my home server and all of my mobile and TV devices and I haven't had it "forced" on me at all. Everything works great. Typically. Until I have to restart FireTV every few days because it stops playing audio from Plex for some odd reason.
I gave up and now running kodi on raspberrypi
we removed the plex pass requirement for smart TVs a few days ago, they are all free to all users. But as someone that works with smart TVs many hours a day, I would stay with rpi, it's a much much better platform, can direct play more formats without need for transcoding and in general more stable.
Just running some Amazon Fire TVs with XBMC/Kody at home, all hooked into my NAS. Next step is going to be building a shared SQL database so all the media positions are lined up.
Although I also enjoy the ability to share my server with family and keep a separate kid-friendly profile for my daughter.