As a thought experiment, who would have access to the most information in the world outside of the sitting POTUS? The richest man in the world? Surely Trump of all people would be the most qualified to make such a claim.
If your intention is to motivate Americans away from Chinese products, what better way to do it then to use a scary virus that seemed to emerge from China to that end.
I'm speculating of course but if you think about it, can you imagine him sitting patiently reading documents first thing in the morning? He would get bored so quickly he would end up on twitter to complain or gloat.