Is it specific to screens tho? How does it compare to reading a book, writing a letter by hand, sewing, cutting vegetables for lunch, curiously disassenbling an alarm clock or any other activity that requires focus and concentration?
Which perfectly describes when you're trying to deal with all your e-mails before 10 am and a lot of the situations don't have easy resolutions, or you're trying to debug something that just won't work and you have no idea why and it's going to mess up the entire rest of your day if you don't get it fixed in the next 30 minutes.
So just a lot of our time-pressure stress situations happen via our screens now.
The situations you're describing seem very much the opposite of stressful.
Virtually nobody sits 8+ hours a day reading books, writing letter, sewing or cutting veggies