If gnome was my first experience with Linux I think I never would have lasted with it. Glad it's working for you. Mentioning which distro you went with would be helpful for a post like this btw, especially for anyone considering the change.
Well, no, that's not exactly what you said. And rolling with a percentile die means you do not need to add anything. A result of 00 and 0 is the 100. And your way makes rolling a 1 impossible.
I'm a forever GM too, and I made this meme referring to a player in my groups. She's an amazing player and I include her as often as possible. The point of the meme was not really to highlight that people use TTRPGs as a therapy replacement, though I definitely know that some might try that and I agree with you that it's not a good idea.
Oh my gods I didn't even notice that until you pointed it out. It's so upsetting.