I think the point of the article was more that you didn't get to to do what you wanted to do, regardless of what that thing is. If you wanted to watch TV because you enjoy it, fine (the time you enjoy wasting is not wasted time). But if you get caught up in things that you didn't want to do (responding to notifications every n amount of minutes) then you didn't do what you wanted to do and YOUR time was wasted. Unless of course you enjoy responding to those messages, but then you ARE doing what you wanted to do and it negates the whole thing!