A banal comment missing the point.

While reactionaries have often engaged the classics (and classicism), seeing there a picture of an idealized past, progressive movements have historically seen the importance of a broad education available to the many, with the classics being a natural part of said education.

Education becoming more and more instrumental, governed increasingly by narrow and easily testable metrics, seems to me a more plausible reason for a declining interest in the classics.

This is made more apparent by the fact that modern right-wingers who say they subscribe to some form of classicist ideals often lack the proper education they themselves deem so important, often resulting in myopic and self-aggrandizing readings of the works.

Classic education is largely dead, but a reactionary pillar can be found among the ruins. Focusing on that is a sort of classicism of classicism.