Think, for further example, of the fey use of traditional form & diction in Ashbery, occasionally, or Jennifer Moxley, for that matter. One could look at this as an option chosen by poets for whom neither obvious traditionalism nor forthright modernist statement quite meet the desired social & political stance. But one could as well imagine the older forms being reworked for the achievement of quite different themes, quite different effects of tone & attitude.

This is what I mean by the unpredictability (& subtlety) of individual practice.