Wait what is the difference compared to the previous behavior?

Plex is absolutely not "designed to run on Windows". Both systems work absolutely great and in any case, a Linux server is a lot more stable than a windows server. Plex is also very lightweight on resources (when not software transcoding), so it won't affect your ability to run other stuff on the same machine. Only managing a single server is going to be a lot easier for you as well.

A piece of advice on matrix. Don't run synapse on the same server, use either dendrite or conduit as synapse is a bit of a resource hog, while the other two are nicer to your cpu and should work well for small installations.

I love the gnome workflow. Coming from MacOS it's more familiar to me than a windows layout, but still so much better than macOSs defaults. I usually have 3-4 workspaces open, with a specific "environment" in a single or a few workspaces. E.g a browser window with email, todos, calendar etc and other "personal things" in one, maybe one for a certain project I'm working on, another for a work project, etc. This way I'm always focusing on one thing at a time but can quickly context switch and have my laptop "switch with me". I also make heavy use of alt-tab and Ctrl-tab for window switching. Together with fewer windows per workspace, this makes it super fast to navigate without ever taking my hands off the keyboard. If I forget where things are, a glance at the overview is enough.

It should be noted that I don't use a mouse and if I love touchpad gestures, so gnome is perfect for me. Even using a keyboard only and the very occasional touchpad is very comfortable on gnome. At least compared to macOS and windows.

I highly doubt this would affect Fedora. Thankfully, it's community driven and self-goverened so Red Hat execs can't go and tell them what to do. (Though I don't know how many ties the Fedora council had to Red Hat)