Not P but DFW: PC backlash

[Mike Jing]

The following excerpt is from David Foster Wallace's review of John
Updike’s *Toward the End of Time*:

Most of the literary readers I know personally are under forty, and a fair
number are female, and none of them are big admirers of the postwar GMNs.
But it’s John Updike in particular that a lot of them seem to hate. And not
merely his books, for some reason—mention the poor man himself and you have
to jump back:
. . . . . .
There are, of course, some obvious explanations for part of this
dislike—jealousy, iconoclasm, PC backlash, and the fact that many of our
parents revere Updike and it’s easy to revile what your parents revere. But
I think the deep reason so many of my generation dislike Updike and the
other GMNs has to do with these writers’ radical self-absorption, and with
their uncritical celebration of this self-absorption both in themselves and
in their characters.

What does "PC backlash" mean here? Does it mean that Updike was considered
un-PC, thus suffering backlash from PC-minded readers?