It's just slow and full of jank like what you listed. Disabling SIP is mandatory if you don't want to feel like you need to blow your brains out. (Another issue is that many windows can't be resized at all on macOS, yet yabai allocates the full space for them and puts them in the top-left corner.)

Don't get me wrong, none of this is an issue with yabai, just with macOS. If I were forced to use macOS for work I'd use yabai too. But I've arranged my life so I never have to touch macOS professionally.