What's up with this kind of non-advice always being the highest scored answer? It's not even an issue with HN, I see this behavior all over the internet.
- Removes visual noise from your field of view
- Reinforces the notion that you have control over some things within your environment.
- Reinforces the notion that you have a right to take care of your own sphere of life and it is worthwhile to do so.
- Gets you up and moving, which can reduce anxiety.
So to answer your question: it gets posted because the people posting and the people upvoting believe that it is advice. This probably is a frustrating answer. If you could provide more detail about why you think it is non-advice, we might be able to give a better answer.
Often we look for relieve symptoms instead of solving the underlying problem.
It's not highly scored either.