[vladvasiliu]

You can technically do away with GRUB or similar, too, and have the UEFI boot directly the kernel+initrd image via efistub.

This will, of course, not be signed by MS, so if you use SecureBoot, you need to handle your own signing. Set up is not automatic AFAIK, but once you've created your keys, signed MS's boot key (if you need dual boot), replaced the UEFI's key with yours and set up your package manager to sign every kernel update, everything works well enough. Haven't had a single issue with this in 4 years of running on "enterprise" HP laptops.