The writer is also missing something important: it's virtually impossible for a normal person, or even an abnormal person, to read Ulysses without a guide to the book that describes its allusions and what's going on. If you're trying to read Ulysses without the superstructure of a guidebook or guidebooks, or a class, you're almost certainly going to fail, because very little of it, taken as a free-standing narrative, makes any sense. This is doubly true for those without an in-depth understanding of Irish history and religious practices / cultures.
I read Ulysses in a grad seminar, one or two episodes per week. Without that guidance, I don't think I would've finished. Or could have, in any meaningful sense of the word.
Ulysses seems like it was written to be written about, or to be treated like a puzzle, more than to be read like a novel. Some people obviously enjoy this sort of thing. I don't think I'm one.