I think that's also a good proposal, and I don't think it conflicts with the "prestigious departments stop publishing in $journal" idea at all. Probably we want both.

Only difference is that the author is writing for a wide audience and his best angle to change the world is probably to influence the thinking of future policymakers. While I am just an annoying "why don't you just" guy, my "audience" is just the friends I happen to have in prestigious research groups.

Adam M also probably has lots of friends in prestigious research groups (IIUC although he complains a lot about academia he was quite successful within it, at least on its own terms). And the fact that he instead chooses to advocate government policy changes instead of what I'm proposing, is probably a good indication that he knows something I don't about the motivatioms of influential academics.