This seems illogically dismissive, unless you're criticizing the lack of actual discourse instead of the critics as a group, which I'm not really clear on. It comes off as "The Other Side has nothing to go on but insults and logical fallacies."
Further remark: I figured I'd just bypass the otherwise-upcoming NTS yell and just clear the air so we could all go for the random anecdata and general arguments about Waterfall! Bad Agile! Scrum Masters! and how they caused problems.