It's that "pretty much" that's the debate.
I recently switched from macOS to Ubuntu 19.10 and then 20.04 as my daily driver and it's way flakier and has far more random app crashes than macOS.
That said, the system is fast, the UX is way further along than I expected -- in some ways it's got a better UX than macOS. It's way, way faster at nearly everything.