This may be so for some people, but then I'd like to read it in a review. I hate it, when people are talking only about technique, like this was everything a film is made of. It's like talking about a person and only describing the way he looks or moves. 
Personally I'm so-so with greenaway. Besides "The cook, the thief, his wife and his lover" I haven't seen a film by him I've completely enjoyed, yet. He is a bit too "intellectual" for me also, but I like the "bombast" 
My biggest problem with him is the construction of his films though, which is usually never very original or interesting to me, calling way too much attention to itself. He seems very egomanial, and unfortunately his ego doesn't seem to be close to mine, so I tend to dislike its display (contrary to most of Tarantino for example). 
I tend to like the personally or emotionally boasty people more than the intellectually boasty. The latter usually take themselves far more serious (like i's something special to have complex ideas - come on... ).
But Greenaway is also quite playful, which I see as a big plus. But his playfulness is again rarely particularly interesting to me, as it also seems very enclosed.
Overall Greenaways films tend to be very enclosed in their own thinking-system, (which isn't very good for me, when I don't share it.)