Yes, but that's not a perfect excuse since OpenCore (and Clover) exists. macOS very well can boot without iBoot's opaque "man behind the curtain" blobs, Apple simply never entertained it as an option on their chips. Apparently important stuff is happening in that boot process and they can't have you emulating it for fun or profit.

That is worth discussing though, as it's a marked departure from old Macbooks that did support the UEFI method.