Apple generally doesn't get in the way when users want to boot something other than macOS on their Macs, and this has been true for decades. In the late 90s the

Apple generally doesn't get in the way when users want to boot something other than macOS on their Macs, and this has been true for decades. In the late 90s there were distros of Linux for PowerPC Macs (Yellow Dog mainly) and BeOS could run on several models of PPC Macs. And of course, Intel Macs had Boot Camp which originally mainly just a BIOS/CSM compatibility layer that sat on top of Apple's EFI implementation to allow OSes that didn't support EFI or supported it badly (at that point, mainly Windows) to boot on them. The one hitch in that was the brief period where Macs used a chopped down A-series SoC in place of traditional x86 motherboard components (T1/T2 chips), but they provided Windows drivers for those making the difficulties Linux had with them an issue of drivers rather than inability to boot.