Isn't the Firefox VPN just a rebrand of Mullvad or something? Like they just use their servers and put in their logo?
I have been using PIA for the last few years and I am personally pretty happy. I had some issues with Nord connect and speed a few years back. PIA on wireguard has worked great for me. I have a gigabit connection and although I can't hit that with pia, my Unraid SabNZB hits over 70MB/s easy which is great
I stopped trying to learn linux. Windows isnt perfect but in general it just works. Want a program? download and install the exe. drivers are PnP.
I do tech support for a living. At the end of the day i just want my stuff to work. I dont want to do more work. Same reason i replaced my Ubiquiti APs with Eeros and stick with a simple hardwire topography where possible.