His earlier stuff was much better. If you tried Snow Crash or Diamond Age and didn't like them, he's not the author for you, but if you tried his more recent crap like Anathem I would strongly advise you not to judge him based on it.

Give his earlier works a try and you may find he used to be able to write well (ie. he used to actually edit his work), before he stopped caring and just wrote 1000 pages of unfiltered garbage.