It wasn't flagged for being critical of Altman, though. There are long, critical discussions of Altman here all the time. It was flagged because Gary Marcus is fast descending into provocateur-ish nutterdom and the article is, quite simply, poorly constructed rage bait.
About your own two downvoted posts: They probably aren't downvoted for the reasons you think! Your opinions are pretty widely shared here. A lot of people agree with you about the copyright issue, about the farcical non-openness of OpenAI, and about the environmental stakes. It's the other bits (insults, complaints about moderation) we can do without.