“What does “dishes” mean?”
My question exactly.
This is the meaning I immediately thought of: (from www.dictionary.com)
dish it out, Informal . to dispense abusive language, punishment, or praise, enthusiastic approval, etc.: When it comes to flattery, he can really dish it out.
However, there was another one that they are probably using in this headline: to gossip about
I would have chosen a different verb.