I don't think it's unfair to ask someone to back up a claim, especially when the dataset is publicly available through the API or (more conveniently) in BigQuery:
SELECT count(*) FROM [bigquery-public-data:hacker_news.comments]
WHERE parent IS NULL;
Story and comment IDs are also simply incrementing integers. We're not making it easy on ourselves to hide this sort of thing!
It might help if you folks kept a public moderation log.