Post-flarf explained:

In much the same way that the ascension of the Language poets resulted in earlier poets from very different traditions, such as John Ashbery, being lumped in with them, soon the Language poets themselves were viewed as somehow a part of flarf--perhaps, indeed, its founding mothers, only gradually realizing their full potential through the final realization of flarf. Or maybe it was the New York School, or the Dadaists. At any rate, probably the single most significant factor in the ultimate (and inevitable) decline of flarf as a poetic category was the rapidity with which flarf and poetry itself became essentially synonymous, thereby eradicating the need for two different terms.