Why do so many people hate Moffat?

I might be getting confused here (I'm a casual fan, not a Dr Who expert) but I think I have an idea:

He's the writers who's made the series much more complex. Before, you had mostly episodic plots with one story running through a series. Now, you have story lines lasting for 2 or even 3 series. I think some people miss the old format. Also, this new format can be confusing for casual fans (like myself, but I don't personally hate Moffat for it), since they don't rewatch episodes enough to remember every detail.

I don't hate him I feel he has made the show better. Most hate him because he came second he changed the show up and made it more harder to follow. Also most fans that hate him loved the 10th doctor so he left just about when Moffat took over.
Also people feel he is sexiest.

People like him because of Sherlock (most Doctor Who fans are also Sherlock fans). People hate him because he made the show more complex.

I don't hate him. He's done some good DW episodes but he does aggravate me sometimes when he makes an episode too complex to follow.