He should have been listening and asking questions instead of insisting on speaking.
The problem with this is that I really don't think it ever implies that, upon listening or asking questions, someone is then free to state their own opinion.
In other words, "Don't TALK, just LISTEN" really means to not talk, listen, and if you still disagree, stuff it.
It sounds almost like it's promoting a dialogue, but it's really just promoting a new monologue.
And of course "listening" also means listening to someone make no sense, listening to someone stereotype you, listening to someone blame you... that's why we need to be scolded to listen.
If people are making sense and speaking rationally, I don't need anyone to tell me to listen. I'll listen to that on its own merits.