I installed Ubuntu on my Macbook Air a couple of days ago. After making some adjustments for the hardware everything works. It's faster and smoother than current MacOS. It also looks better (after slight GUI tweaking).

Granted, with Linux you will often have to do a bit of setup initially, but after that you don't need to touch the innards of the OS again if you don't want to.

I don't think MacOS is a superior OS compared to Linux anymore. However, MacOS does have an ecosystem of some very good apps that do not have their equivalence in Linux. Hopefully that too will change.