Secure Boot - Difference between UEFI variable authentication and protection

Also, Implement Jetson Secure Boot without UEFI Secure Boot on Jetson AGX Orin - #9 by JerryChang mentions the Bit [9] ODM Key Valid bit in the FUSE_BOOT_SECURITY_INFO_0 fuse. Do I still need to set this? As it is not mentioned in the documentation.