I think that for now you are still good to go with Plex. One suggestion, though: take a look at all your server and admin toggles. There are things that you may prefer to be off that are defaulted to opt-in.

I don’t have a working server at the moment so I can’t check the latest stuff for myself, but the last time I was able to, I found some stuff I could opt out of with just a click, mostly involving the Plaex Network and keeping my user accounts strictly local.