I try to use my partner’s windows laptop and it’s borderline unusable for me. She only almost uses it with a mouse plugged in. Meanwhile I don’t think I’ve ever seen someone plug in a mouse to a MacBook that wasn’t docked to a monitor and keyboard.
The main issue with going beyond the mouse is that it involves changes across the event handling stack. For track pads, you have to build multi-touch infrastructure up ro a point and then there is a decision: what are gestures that are handled at a desktop level? What are gestures that get converted into semantically similar events (e.g. tap->LMB click)? What gets passed through as multi-touch? This ends up touching a lot of parts of the desktop software stack and the amount of required buy in to get this done on Linux seems massive.
And the original UX issue is much easier solved by bringing a mouse with your laptop.
... or using an Apple laptop. The one thing they haven't broken yet is that their machines are perfectly usable without a mouse.
Of course, the argument is weakening with every recent OS release, since they try to make it useless in other ways.
Are you on X or smth?
Or was there a different meaning?