Money in the Wallet.comTheLawOfAttraction

I was just wondering why left wing liberals typically think that Cesar Millan is a hack?

Why do they believe that a person must posess a degree in order to be an expert in their field?

what does this have to do with politics?
and why is this in cultures and groups?
lol.
he’s a dog expert, obviously world renowed, who cares if he doesn’t have a degree, he has a tv show, celebs turn to him and he’s successful.