Yep! Half an hour or an hour - it is enough for rest, but lots of people watch it all day long.
Watching for level up skills - ok, watching for rest - ok again. But watching it all day long - unclear for me. They can watch it of course, it is their decision and their life, they decide how to spend their time themselves. But for me it is just waste of time - the only resource that you can`t buy.
Watching all day is not a good idea for us because we have things to do. But somehow, some people choose to watch that show all day, and it makes me wonder if they have nothing else to do. Even if they have a lot of free time, it is better for them to use it for something more useful. Watching all day also won't give you a chance to gain skills because to get skills, you have to practice those skills more. Watch the shows in moderation and practice skills a lot. That's what is often suggested. But perhaps for them, watching can provide new ideas or make them know what to practice.