Apple implementing iBoot is table stakes. They should have gone the extra mile actually, and implimented UEFI the same way Intel did; but that would have made it too easy to support Apple Silicon on Linux. Sticking to their proprietary bootloader forces reverse-engineers to painstakingly guess at DeviceTree drivers until a bare-minimum boot environment is possible.

If Apple hadn't opened iBoot in some way then I don't know how they would handle a secure reinstall process. If that's "to actually help them" then they very clearly didn't try too hard. Without driver code or UEFI support they're basically telling the community to pound sand, and modern Asahi efforts reflect that.