Perhaps you missed the controversy by skimming, smithsax?
The crossword element is scant - 4 letter words throughout and, OK, not quite cold-solving, I can accept that. It's the grid-fill and how many answers are needed to populate it that is controversial. At the last count, 'a handful' appears to be adequate (before the sudoku element of trial and error kicks in) but that was far from my experience. I had all of the clues solved and all of the extra letters pretty quickly - and still barely half of the grid populated when I had to start the guessing game.
A further controversy - that the final grid fails to show that the puzzle has been completely solved - is mentioned later on, but it would be giving too much away to go any further into that.
Still, despite the obvious flaws, this is clearly work of genius for anyone with a passion for programming or sudoku... or something. Sadly, I'll find the puzzle unforgettable too.