Well you clearly can't play first person shooters even on Apple's trackpads, but every time I switch to an x86 one the control is more ... approximate.
On my apple laptops i've succesfully played stuff like Minecraft or Path of Exile without a physical mouse. And never missed a mouse while doing software development.
> reasonably powerful integrated GPUs.
Path of Exile is anything but reasonable to the GPU. And on an older M2 mac mini I was lucky to get 20-25 fps. However, the M3 pro on my laptop can mostly run it at 60, to my complete astonishment. Especially considering it's a windows application that is ran by x86 wine that is translated to arm by rosetta 2...