I agree with the author here - I've used Plex for 5 years now and have recently felt the heat of their drastic UI changes, and the way they are now forcing everyone to "signup" for their service.
My servers have gotten incredibly difficult to find since they are now in a weird submenu, and whenever I see the homepage it confuses the hell out of me when I try to pick up my content where I left it off last time since now there is a lot of Plex's own promoted content carelessly interspersed everywhere.
Whenever I try to ask my wife or friends to use my Plex server, they end up getting confused while navigating to find our locally hosted content. All of this only proves that Plex as a company is trying real hard to push their own content and services and lost the touch of what they originally intended to make as a product in the first place. I am glad I never bought their lifetime pass. Goodbye Plex and hello Jellyfin.