"That’s a really dismissive way to say you have nothing at all"

Yes?

so you run away like a coward.

Would telling a crazy person that they are crazy be of any use? There wouldn't even be any satisfaction in it.

The guessing game is fun since its amusing to get an insight into somone who lacks knowledge on the subject but is so overconfident they will make claims on the basis of an argument happening entirely in their heads rather then whats happening in reality. Pointing it out wont change anything either as as consumed as they are by keyboard warrior rage you will just run around this circle until you tire yourself out