I think trackpads emulating a mouse should be considered a poor implementation, a trackpad is different than a mouse and we should utilize that with the design. A trackpad is best imo when combined with gestures, almost as a hybrid between a typical touchscreen and mouse. For example pinching motions, two/three finger tapping, two handed use, etc are all options for a trackpad that don't work (or work poorly) on a mouse.

Nah a touchpad feels more like a smartphone display than a mouse, so "natural" scrolling it is. Inverted Y for gaming too. I think it depends on what you grew up with - playstation and Xbox don't use it per default but Nintendo (at least old consoles and games) does I think, so I cannot switch back to not inverted, it feels unnatural.

I used to use inverted Y, but it stopped feeling right at some point in the Xbox 360 era and I switched.

I think it was the first console gen where FPS really took off. Like there were FPS on PC for a long time before that, and Halo was pretty big on the Xbox, but the PS2 ones were all kind of clunky and experimental.

I think I only used inverted Y to start with because the only first person games I used to have were flight sims.

I used to play games with both inverted X and Y. But lately (last 10-15 years) inverted X was often not an option so I had to force myself to play both axis non-inverted. It took a few months but it feels natural now.

I consider trackpads to emulate the touch of the screen (so like a phone). So natural scrolling for me.