I have always wondered about this. I have never used a Macbook, but I haven't had any issues with the trackpad on Linux either - I flick my finger, point, tap t

I have always wondered about this. I have never used a Macbook, but I haven't had any issues with the trackpad on Linux either - I flick my finger, point, tap to click, pinch to zoom, double finger to scroll etc. I'm always using laptops a couple generations behind, and it always worked, often out of the box.