Actually the double-click action is pretty rare nowadays, right? In particular, I use it a lot to select a word in a terminal, but most of the time when I am getting UI instructions it is from a website about how to use the website itself, and since that’s a website it has to be abstract enough to also make sense for mobile users.
Telling people to double click is, I think, mostly dead.
- The page mostly loads
- An ad starts playing
- I attempt to hit "pause" while I go handle a thing or two [0]
- As I'm about to click "pause", the layout shifts to the left exactly enough for me to unmute the ad
- I immediately click again to stop listening to whatever scam is currently being peddled
[0] For some videos I like to read the description before watching. For all videos I like to make it as obvious as possible to Google that there isn't a real person watching the ad (browser not focused, ad muted, ...).