It's how "work" always was for thousands of years, before the office culture meme changed it during the 20th century
You couldn't be more wrong. There is mountains of evidence that attention spans have shorted, and parent comment was a perfect example of that. Can't be arsed to deal with whatever you should be doing? Ctrl + pgdown to the twitch tab.
Working in an office pretending that I can focus on the task at hand whenever required by the roster of office life is one of the biggest charades I've ever performed. It's not possible for me and I piss around on the internet on their time when I am unable to focus. I don't feel that's an abnormal situation for people, either, as it seems many of my colleagues also do it.