I agree. I was able to scroll back up easily to see specific parts without some acceleration taking over.

And the implementation of it was brilliant. Didn't mess with the scrolling feel very much at all.

Completely agree. First and only, in my experience. Genuinely impressive on mobile.

The bleeding edge $whatever functions required to create it meant that even a browser from a couple years ago only displays a white blankness. It is not a good design for a website.

Apple's own website has used same design pattern on many pages. Similarly, Xiaomi also