This has been my experience. I used Fedora for a while years ago, but rpm was already second fiddle to deb. Plus, I was already selling into my “old man distro” so I kept ending up with some Ubuntu version.
I did recently Manjaro and Linux Mint, but ended up with Ubuntu again, although this time Kubuntu, Ubuntu with KDE!
No shade from me though for going with Red Hat.
I think the Windows thing is spot on. You’re going to be using a handheld gaming device for gaming mostly (if not entirely). You don’t need to run Excel.
I think the justification for Windows on a gaming device though is kernel level anti-cheat. The problem is that you are chasing a pretty select audience. People who will play one of those games on a handheld, and will also only buy a handheld that can pay those games. Also won’t install Windows on a Deck either.
An aside, I probably use Desktop mode more than average, and I have LibreOffice installed on my deck. Jokes on Microsoft though, I’ve been using Linux primarily for ages anyways, so I don’t even need Windows for that.