One answer. Secure Boot. Windows 11 helps keep things secure by securing how it starts up. Nobara Linux is a hobbyist Linux and they said they that don’t ever plan to support Secure Boot.

What does this mean? It means that my main computer which has both Windows 11 and Nobara Linux on it can only access one of them at a time without changing settings in the BIOS. Now since it is inconvenient to change settings in the BIOS I have changed how I use my three computers.
I gave the Mac to a friend who needed it, and now I have 3 computers that could run different operating systems. However crucially I only have two that support Secure Boot. Since my wife has one of those computers, that only leaves me with one computer that supports Secure Boot which I need for my consulting work.
This means that I have switched my main computer to have Secure Boot turned on. This disables Nobara from starting up. No big deal, because I have installed Nobara Linux on the computer that used to have OpenSuse Linux. I love OpenSuse Linux, but I also love to play Steam games and I played games on that this weekend. It worked very well even though it was a cheap computer.
Now you may be saying to yourself, self, why does he have 3 computers but only two that do Secure Boot? Because my friend my secondary computer is a computer that was given to me by a company that I used to consult for. They said that it was ewaste to them, so I disabled Secure Boot and used it for Linux. That way it wasn’t trashed. Now if I enable Secure Boot it will boot to their company login page and since I am no longer a consultant, I don’t have an account that works, so it is dead to me for any OS that requires Secure Boot like Windows. Reformatting it to Windows 11 Pro/partioning it made no difference.
Do I miss not using Nobara on my main computer? Not really. Like I said it worked very well even though the computer is perhaps 1/3 of the power of my main MSI computer. I don’t play very demanding games, and in some ways it was better. With only one video card it had no problem dealing with the projector and I love the keyboard so it might be my primary computer going forward. As much as the gaming computer speeds up loading times, it doesn’t negate its disadvantages of weird keyboard layout and size/weight. Everything in life is a trade off.
I don’t regret getting this MSI. It answered many questions and it certainly the finest computer I have owned. I just don’t see the point going forward when I am not the gamer that I thought I would be. You learn in life and adjust don’t we?