For the past thirty years or so, much American poetry has been marked by an earnestness that rejects the comic. This has nothing to do with seriousness. The comic can be very serious. The trouble with the earnest is that it seeks to be commended. It seeks to be praised for its intention more than for what it is saying.
Stephen Dobyns (2011). “Next Word, Better Word: The Craft of Writing Poetry”, p.59, Macmillan