The commenter has replied and accepted that their comment could have been better with respect to the accusatory, cross-examination style, which was the main concern I had.

Regarding the age of HN users: yes I know it's not the case that 100% of participants are mature adults; when I make a comment like that I have to ask myself "do I really need to couch this with the concession that this is not a 100% watertight assumption?" Evidently yes :)

I think it's important to defend against hostile comments towards people sharing unconventional healing techniques on HN. People who share these concepts can be vulnerable to attack from people who feel very emboldened by their faith in mainstream approaches and allegiance to orthodoxy. I know it can be exasperating, trying to be heard when faced with attacks like that, no matter how well-intentioned, well-researched and conscientious you are. We don't want HN to be a place that allows hostile treatment towards marginal voices to go un-defended, because it's usually the case that transformative ideas start out as fringe ideas, and risk being lost altogether unless someone makes the effort to advocate for them, often at great personal cost.