This presentation is bullshit. You have no evidence, nothing valuable to show, just spurious subjective opinions. You've put up a straw man and now are trying to knock it down assuming we are idiots. I've seen enough. Whoever said this is a dev I'd refuse to ever put into an interview again. Hell, I'd be reluctant to put this dev into any meetings requiring communication skills.
If you wonder why the random dev in the interview thinks this is acceptable behavior, that's a clue.