I replaced my MBP with a Dell XPS running Ubuntu. I had serious problems with the Killer wifi card but replaced it with an Intel one for $20. Otherwise everything worked perfectly.

Around the same time my Mac Pro refused to upgrade to the latest version of macOS because I had a RAID. I installed Ubuntu on that as well. I was a little worried because it has multiple monitors but that was handled really well and worked fine out of the box. I did the same for the family iMac. Haven’t looked back.

I run linux on a Macbook Air 4,2 (2011) and its pretty nice.

When people start buying nice laptops just for Linux, the experience is a lot better. Most of the time, I've put Linux on scrap-heap computers which has always flavored my Ubuntu experience. Laptops with $300 Celerons with TN panels will always make Linux look subpar.

I am going strong on a 2012 MBA, but I guess I will soon update to the M1 Air/Pro