fast.ai has no revenue at all, no investment dollars at all, no marketing team, and no PR budget. It's entirely self-funded out of my pocket personally in order to help people. The courses are all free, there are no ads, and the software is all open source.

Neither I nor anyone else at fast.ai has ever asked anyone to comment on an HN post, or to post anything to HN.

edit: Just noticed last time fast.ai was mentioned on HN you that made a similar claim. @dang and I both responded to you then. So this is not just some misunderstanding, but repeated and intentional falsehoods. https://news.ycombinator.com/item?id=18096807