The pinch gesture on Vision Pro is pretty smooth and easy, about as much physical exertion as a mouse click. Right click is harder, I'd expect most app developers to do something similar to iOS and treat long clicks as right clicks but that's pure speculation.

I'd love to have an eye tracking setup though on a normal desktop computer where I could devote a keyboard key to clicking and I'd never have my hands leave the keyboard.

On the Vision Pro, tap your index finger and thumb together.

Maybe they could add other features from just your face though for other platforms, wiggling nose, raise eyebrows, stick out tong, blow a raspberry?

That or they add voice commands, "open", "select" and such.

I suppose ultimately in spatial computing with voice interface and eye tracking the concept of a "click" may die.

There's also apparently other gestures and voice commands that can be selected in the settings, though I haven't seen any real detail on it other than "they're there".