For Carly, if the official says it won't be supported for the time being, I think it's mainly a question of demand. If the secure boot is turned on and the user does not have the right to modify the motherboard signature database, I think it is difficult to get a signature for the distribution of Kali nature, and it is also very troublesome to directly sign a justified kernel image with other distributions. If you need to turn off the safe boot-because you can enter the BIOS/UEFI settings, just turn on the compatibility mode!