Is YCombinator astroturfing now?

Is it new that news.ycombinator is including what seem to be paid adverts like https://news.ycombinator.com/item?id=10678405 that allow no ability to comment etc. without distinguishing them from content being submitted via the normal process? Have I just not being paying enough attention to spot the astroturfing? Anyone know why these adverts aren't being flagged as such?