He was one of the earliest PQC popularizers and probably coined the term. But asserting that he enabled everyone else's work is a little like saying that the person who coined "misuse-resistant authenticated encryption" enabled all the different misuse-resistant schemes; the underlying issue was plainly evident, and people were obviously going to work on it.

Your last sentence falls afoul of the HN guidelines, and your comment would be far stronger without it. Which is unfortunate, since there's an interesting and curious conversation to be had about the significance of Bernstein's role in PQC.