Recent testing revealed that Arch Linux, Pop!_OS, and even Nobara Linux, which is maintained by a single developer, all outstripped Windows for the performance crown on Windows-native games. The testing was run at the high-end of quality settings, and Valve's Proton was used to run Windows games on Linux.
Secure Boot is an utter piece of bullshit from the depths of hell.
Proprietary UEFI BIOS is, but for a secure system with local manipulation prevention it can be needed. Also secureboot is a security measurement against malware so no, its simply the best we have.
Look at Coreboot if you want a secure modern system
Secure Boot is just Bootloader Signature Enforcement controlled by M$, it’s not gonna prevent Superfish 2.0 from happening.
Unfortunately, I don’t have a coreboot-able system. When I move out I’ll make that a priority.