I don't think it's very specific to screens, but it is specific to situations where you've got incoming stressful content and especially a time deadline.

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.