Ok, if you want to be stubborn about it then leave Windows on a partition and only start it when you want to play that one game. Problem solved.
In many ways, moving to Linux is like starting to live on your own. Your mommy might be a better cook than you, but is that a good enough reason to keep living in your parents' basement?
Win insists on bootlocker/secure boot, meanwhile most of the Linux doesn’t boot with it or you have to go though hell and back to install unsigned drivers (nvidia, gentle-yall).
I’d all say that Linux is like living in a car with 0 euros and saving up for a house. Simple user can scrape by, but mowing dev work life to Linux is much harder than to Mac. VPNs, inconsistent distro support for weird work stuff and such will make you spend days to weeks of unpaid overtime to get comfortable
Linux can handle BitLocker & Secure Boot just fine. The problem with dual booting in that configuration is rather that every time Linux updates the boot loader, Windows will freak out and stop booting until you enter the recovery key for BitLocker. This can be prevented by first booting into Windows to disable BitLocker until the next reboot and then installing the Linux updates, but in practice I find that I forget about it all the time with my dual-boot laptop (which spends most of its time booted into Linux).
This is a solvable problem and there's even pacman hooks around to do it for you
But also don't blame Linux. Even your comment says the problem is Microsoft. We need to be collectively mad at the right entity if we're going to get them to change. Otherwise they'll keep bullying people and they've found that they can bully people so much it gives them Stockholm Syndrome, where they feel they can't leave.
For quite a while I've found that the much easier answer is to have a physical drive per OS and make sure it's the only drive connected during install, or at least one for anything that doesn't play entirely nicely with multi-boot. Obviously there's downsides to that, buying another drive or you might be using something like a laptop which is less friendly to extra drives, dis/reconnecting M.2 drives isn't as trivial as SATA either.
Secure boot mainly gets annoying if you have an Nvidia card, since the akmod needs to be self-signed. It's not insurmountable but you have to load your keys into the UEFI before it'll work.
Bazzite builds the Nvidia driver into its kernel, so you don't need to do anything special. Post installation it prompts you to do key enrollment, so all the user needs to do is select "Enroll MOK" and type "universalblue".
I’m sorry but are you being intentionally obtuse? You can’t think of a single downside to running two systems on your machine instead of one? If you lack imagination to that level I can’t help you dude
Of course running one system is better. Use Linux and stop being miserable ;)
Still, you haven't said what are these extremely horrible cons that two systems have. For me they're so small it's not even comparable to having to submit yourself to a shit Windows system only to avoid the "hassle" of having two systems.
I used Windows only for gaming and Linux for everything else. Now I'm fed up with games that choose to block Linux out, so I no longer need the two systems and couldn't be happier.
I’m not miserable in the slightest, just endlessly bewildered that people in the Linux community continue to have attitudes like yours, despite that being literally the main reason people are put off of Linux. It’s self defeating.
In many ways, moving to Linux is like starting to live on your own. Your mommy might be a better cook than you, but is that a good enough reason to keep living in your parents' basement?