It’s still loading the page internally to extract the video link. I don’t think newpipe after that looks different than say a smart tv,. So it’s up to YouTube to do the counting.
Depends on the level of abstraction you’re looking at. Operating systems today are vastly more capable of organizing different provesses, distributing work amongst multiple CPU cores, CPU caches, etc. I guess the von Neumann architecture has just proven really successful in practice. And von Neumann machines require a certain set of capabilities in their OSes.
Maybe look at embedded systems, where we find a bit more variety. Things like DSPs or microcontrollers.