I wouldn't say it was unsubstantive. It described a concrete situation with new information. Yes, it also had a note of complaint (pretty understandable assuming the information is true), and perhaps a bit of gratuitous showing off, but "falsely paint the author as a victim" seems harsh.

You can agree or disagree, but addressing another user the way you did is definitely outside the community norm here and a bannable offense, so please don't do that on HN again.

Also, since your account has so far commented on only one topic and done so rather pugnaciously, I should let you know that single-purpose accounts are not allowed on HN, and especially not accounts that use the site primarily for political battle.