There aren’t any undergraduates (I don’t think an 18-22 year old could be trained from birth to do it) capable of understanding that book, so the resentment you observed was to be expected.

We can, of course, quibble about the what “understanding” means and whether you (or I) understand it ourselves; but I think the honest and informed observer will agree with me.

The key issue is whether the book can be understood without something closely approximating Deleuze’s philosphical background and range of reference, which no one that young can possibly have.