For anyone (cough, elderly parents) who aren't adept at discovering hidden features, these things can be utterly mind-boggling and frustrating. Even I was stumped for a good minute the first time trying to print/save/download a PDF when that "feature" came out.
I don't really need the small sliver of menu space in PDF view to be reclaimed -- and for what, a "clean" look? Those are real and important functions I desire. What I actually need is for news and blog sites to stop covering 1/4 of their vertical window space with hovering frames, ads, and banners asking me to subscribe. Which, by the way, subsequently don't properly calculate into that now hidden scroll bar's movement and cause you to overshoot the displayable area when paging down. End rant.
Then I opened Adobe After Effects for the first time and it suddenly made sense to me, the UI I found intuitive was just years of practice. How is an x in a corner a close button? What's so intuitive about swiping up to see a menu?
Those people would be even more shocked by the extent to which this is true in the western world as well.
I write mostly about JavaScript, Node and other stuff I have learned along the way.
Here are some posts: Effective Remote Communication: https://blog.agney.dev/effective-meetings/ Picture-in-Picture Countdown timer website: https://blog.agney.dev/pomodoro-on-pip/