Earlier quoted context omitted.
Did they? My MacBook is much worse at multitasking. In fact the OS I've found to be best at multitasking is Debian/Ubuntu.
A decade with Ubuntu and I get why it’s free. I have disastrous performance issues with it, for reasons that people usually respond, “oh well that’s not Ubuntu’s fault…” but that isn’t a great excuse as users do not care (unless you aren’t intending to attract general users). Most of the issue is that I have to fight with nvidia video drivers every month or two. Something happens and they stop operating and it grinds…
If you want a good Linux experience, you should look for hardware with first class Linux support. Likewise, good luck with macOS on non-Apple hardware--it's possible but ymmv