I started off being one of his biggest advocates and a huge fan of his early work. I was telling other comic book fans in school about Grant Morrison and back then, nobody had a clue who he was. He was just seen as that "out there" writer.
As my Dad is good friends with Grant, he had all of Grants work usually before anyone else did. I grew up reading Doom Patrol and a few one shots by Grant Morrison which were all great.
However, lately I find all his work crap. I went through the entire comic line for "The Invisibles" and thought it was all a bunch of intellectual bullcrap.
I'm a big fan of the Batman franchise and was looking forward to reading Grant Morrisons run. I actually liked his run of the X men but I could tell he had no real passion for Batmans storylines. It was just the same old Grant Morrison trademark and he clearly just wanted to do his own thing. Bringing in Batgod? Introducing these daft characters from the Golden Age? Having Joker know Batman is Bruce Wayne?
I suppose Grant Morrison is like marmite (love him or hate him) because he's going to do only what HE wants.
Yes, you could say his storylines are intelligent and bla bla bla but he's just putting down what works for him. I'm currently reading the New 52 Superman in the Action Comics series and it all reeks of Grant Morrison. Him and his irritating time travel and mind bending multi dimensions. Eventually, it doesn't even feel like a DC comic and feels more like Grant stroking his own intellectual prowess again.