woah woah woah that’s alot to uncover too hold on.
First and foremost don’t consult chatgpt as it doesn’t have up to date data and even then probably won’t be on par with human recommendations.
Second of all, with Nvidia opening their kernel drivers slowly (with userspace still proprietary) I actually have heard wayland is better here so if you need Nvidia I wouldn’t go against it and wayland is way more secure than X11.
With that being said if you’re putting emphasis in security first, I would not recommend a PC with Linux, Unless your priority is Linux first Security second (as the creator of Secureblue put it). Get a Mac or a ChromeOS Device for the best possible security.
There are no backdoors on Gigabyte boards, It seems the post referring to it refers to the App Center, which is the truth here, and it’s possible to actually disable it via the BIOS anyways and updating to the latest bios after helps so whenever gigabyte gets chosen it wouldn’t matter, it is an exaggeration that there is a backdoor. Reports also say this doesn’t affect Linux (then again for security I don’t recommend Linux unless security is your secondary priority)
there’s also the list of boards that are affected and the ratio is within the 50%, So again backdoor is not an issue if anything it is solved. Reported boards are also not affecting B800 and X800 boards so that’s good.
With coreboot well, ya might want to check:
https://doc.coreboot.org/mainboard/index.html
I will remind if security is a priority, a Linux and PC is not the way to go.
idk what memory encryption are you talking about, there’s no memory encryption to speak of whatsoever and Full disk encryption is actually standard on almost every single system nowadays.
With that being said let me know if you wanna proceed if you set the Right priorities.