If you want the HN guidelines to be consistent, they shouldn't demand people presume good faith when the tactics of cancel culture are wielded in threads to try to tag people with the label they are promoting right or left wing conspiracy theories, which can direct a mob in their direction if not strongly pushed back against.
I agree with you that the GP swerved into a strawman at the end and shouldn't have. Indeed they broke the site guidelines there ("Please respond to the strongest plausible interpretation of what someone says, not a weaker one that's easier to criticize.") But piling on with grossly worse violations is exactly the wrong thing to do in such a case. If you have a better point, you should serve it properly by keeping your cool. Assuming you're in the right, doing otherwise just discredits the truth, and that actually causes harm.
https://hn.algolia.com/?dateRange=all&page=0&prefix=true&sor...