You can blame it to the stupid mass. Protoplasmic clusters on two legs getting comfortably numb.
(Kissinger called normal humans "eaters" too.)
You might blame it to the quality of your post. Fuck, I have a creativity crisis.
Or you take heart looking closer. You simply do what is in yourself.
Old monks called that facere quod in se est. Fuck what others think. Fuck you doubts!
You post because something is in you you find worth posting. You do it according to yourself. You do what is in you. Facere quod in se est.
It is like setting a paper boat on a stream. You let go. It is not in your hand where it goes.
Facere quod in se est is the only thing btw which is in your hand - it is an expression of you, an emanation of your awareness, of your being as being you.
Remember - if only one human finds comfort or a smile in your post - your little paper boat - you have touched a whole universe.
The question of shallow or stupid posts will clear after you get aware of who you are and what you post. You will grow in that.
Post if you feel you should. Have courage. Think not about how many people will read. Try to do what is in you, always...