Earlier quoted context omitted.
There could be an arguments that you can install a lighter OS on these machines. That's not as easy with MacOS.
No. Nothing about MacOS prevents users from installing alternative OSes. Even with Apple's custom chips, that remains true. It's only that it's a smaller target that limits options as fewer people are writing software for that hardware than for x86. See Asahi to verify[0]. I've been a donor since the week they opened a Patreon account. 0. https://asahilinux.org/fedora/
Reminder that the possibility of installing a third-party operating system on Apple hardware is not a given. The same silicon is used in iPhones and iPads where you absolutely cannot install another operating system.