The fancy metal case isnt properly grounded- I get occasionally a slight tingling /shock from it when I have it plugged in.
Battery life is on par, at best, with my other laptops.
Macos doesn't let me configure or change the things I want to configure or change. Some programs are usability / discoverability nightmares.
Performance of most programs is, at best, similar to linux or Win10, and is frequently worse against other machines with similar hardware.
I have used several models of MacBook and an Air, and personally will not purchase another again... I am tired of paying top dollar for a mediocre experience.