Well my arms didn't get longer, that's for sure. Also MacOS and software made for MacOS doesn't optimize for touch targets unlike something that will be distributed on iOS/iPadOS.

It's not the finger, it's the arm. Remember light pens?

Not that novel. The first ergonomics studies on touchscreens were done in the seventies. In 2010, touchscreens were already sophisticated technology and well established in many settings.

I got my first laptop with a digital pen and touchscreen in 2008 or so. They were rare back then, but nothing groundbreaking new. The touchscreen did suck though.