The $1000 cost figure was shared I think almost a decade ago. The much somewhat more recent reddit post clearly states that $5000 in revenue isn’t the threshold of profitability for the company. What I think that math tells us is that the $1000 is out of date, because otherwise the majority of HGs would indeed be profitable – a possibility explicitly foreclosed by Jason’s reddit comment.
Edit: just checked the date on the reddit post, and it wasn’t as recent as I’d assumed. 
Tweaked wording accordingly.
And I just found the nine-year-old post that was the source of the $1000 figure – from back when CoG had fewer salaried staff and put less time and cost into screening HGs for offensive content (and, more recently, signs of AI authorship). The whole post is worth reading for insight into the founders’ mindset, but here’s the key quote:
I don’t think you sounded at all rude.