At the end of the last course we put out a survey and asked for feedback. There were multiple questions in the feedback form. That's why there are multiple quotes from each person.

If you google any of those names you'll see they are absolutely real people. E.g. here's Pol's Google Scholar page: https://scholar.google.com/citations?user=ayz0DtUAAAAJ&hl=en . (And I see he's posted here on this HN chat too in fact.) Here's Mathew Miller on Twitter: https://x.com/matdmiller?lang=en .