I, personally, agree with your assessment of the post being a wumaodang, but I've been incorrect on that front before (and corrected by dang himself, who had done previous investigation into the account I was concerned about), and so in the spirit of the HN guidelines "Please don't post insinuations about astroturfing, shilling, bots, brigading, foreign agents and the like." I think it might be best to elide that particular statement...
...which doesn't invalidate the rest of your comment, at all.