Earlier quoted context omitted.
Comprehensible to whom? Masters of continental philosophy have no problem rendering their fields comprehensible to, say, graduate students in the field. Some (easier) texts are comprehensible to undergrads. Any "lack of an internal structure, consistency, truth" is imagined by Chomsky. Really.
Assuming there is a point to this sort of recursive thought exercise, the largely impenetrable nature of the material by definition guarantees no benefit to society at large or other academic fields. So other than providing a private game preserve for a peculiar flavor of intellectuals that aren't interested in a day job and can't be bothered to gravitate to fields with demonstrable intrinsic value what, exactly, is…
And so long as these people are teaching 300-level classes to undergrads they're definitely doing something of value, even if it's only creating individuals as jaded as yourself (which who knows, may have some value.)