His point is that he runs a MOOC and his students have their own AWS accounts. Since they are students, and do not have established histories at Amazon presumab

His point is that he runs a MOOC and his students have their own AWS accounts. Since they are students, and do not have established histories at Amazon presumably they aren't able to get these limits increased, and so can't do the labs for the course which require a GPU. His biggest objection was that this wasn't documented anywhere, and so he's built a course and sold it to students based on the promise of an on-demand GPU for labs, but they can't actually participate since they don't have the history required to get their GPU limit raised above zero.