[danielmarkbruce]

They didn't ask for citations. They pointed out a citation was needed. It was a clever sounding way of calling bs. They admit as much.

Even when people sincerely ask for a citation on a debatable topic, on an internet forum, it's effectively saying "I won't be hear any opinion that doesn't match my own unless it's as water tight as a law of physics". Another form of this is "show me the data".