I think lang author is asking to not start flame wars, but there are bunch of people (you included) attacking him first in this topic, and he can't respond?
He can't respond if he doesn't want to engage in a flame war. I'm a dog on the internet, he's the dev of a project he's pushing that is trying and failing to build a reputation as someone trustworthy.
or he just became a target of some salty internet mob which is now following him everywhere, and many other people(me included) actually find his work interesting.
I think language which these people are using (scam, outrageous and frequently false claims, lying) is hard to call "mildly critical", and given they appear in multiple posts and their claims are not directly relevant to post, and proactively initiate all these toxic exchanges, this is exactly stalking.
He was saying there is no need for a flame war not because your language is fine, but because flame wars are not fine on HN.