> So, dismissing him out of hand (especially rejections based on his ostensible obscurantism) is akin to saying that Donald Knuth is no good.

This is an invalid analogy if I ever saw one.

Let me try to make it more accurate.

For Knuth to be like Derrida his magnum opus would have to have been generated by just typing

cat /dev/random

and later claiming that MIX was somewhat defined in there as well as programs written in it. Then he would become famous Paris Hilton style and get a bunch of sycophants that defend his void verbiage no matter what (some because their entire carreers depended on it, others just because they are useful idiots).