If your keyboard and trackpad is non-functional that means you are missing drivers. Apple is not preventing you from dual booting, but Apple is also not going to write drivers for their trackpad for linux. Apple is not locking the system down, but they are saying if you want it to work on Linux, write the drivers yourself.

This is exactly what is happening with Asahi linux. The ARM bootloader to install Linux, but they aren't helping the Asahi linux developers write a GPU driver. They are not locking the platform down, they are simply saying you can do what you want, but don't expect any help from us.