He could be really busy. If he has a lot on his plate, he might not have the time to check out your stories. For example, he could be swamped with work, schoolwork, or other personal matters.
It could be that he's not really interested in that kind of content or doesn't think it's relevant to him. Or perhaps he didn't even notice that you shared the stories.
Maybe you can directly ask him why he doesn't watch all your stories. This way, you can get a clear answer. However, also be prepared for the answer he gives. If he gives a negative reason, don't take it too hard. Try to improve the situation or just accept that not everyone will be interested in all of your stories.