I think it's less of Mac hardware specifically, and more of the quality of their hardware.

The best Linux users can do (for a laptop) is a Thinkpad (as they officially have support from Lenovo) or one of the more boutique brands (system76, starlabs, purism) and at best (my opinion, Thinkpads) they trade blows with Apple hardware.

As far as desktops go, building a computer for Linux is simple and easy and doesn't really have that many problems in my experience.