I originally researched several KVM switches. Their feature sets were suited for a dedicated IT environment and weren't fully compatible with home use cases, most notably they acted as a proxy to the mouse and keyboard discarding any special features they may have.
This UGreen switch is simple. You plug things into the switch. You plug the witch into two computers. You press a button on the switch to say whether you're using computer 1 or computer 2. The things are plugged into that computer, no "value added" "smarts" trying to interpret how I want to use them.
Compared to a KVM switch, I need to press three buttons to switch my USB things and dual monitors over to the other computer instead of just one. Small price to pay when this is $50 and works how I want it to, vs $400 for a KVM that gets in the way.