Often they overlap with other "swipe" features giving unexpected results
There is no manual to explain them (that I know of), one must stumble across them which often leads to frustrating results.
If you're going to tie fundamental behaviour to unintuitive behaviour, then you have to make sure it's both easy to perform once learnt, and that you actually teach people how to use it.
One of those swipes (notifications) fights with every other top-down swipe in an app _and_ the window-dragging swipe in Stage Manager, which only works on the three dots.
I find these frustrating and I have no co-ordination issues.