Not true - I love "Blink" and the "Silence in the Library/Forest of the Dead" two-parter. Moffatt really has a gift for taking ordinary things - statues, a library - and creating great stories out of them. Also, those are two great examples of the series creating amazing new villians that are not only original, but scary as well - something that's fallen by the wayside of late (except for the Mummy and the Boneless). I also love "Coupling" - I don't know how many times I've watched those.
As others have said, Moffatt's problem with DW seems to be that he has all these ideas, and there's nobody either willing to say "Well, OK, but where do we go from there?", or with the power to say so. Moffatt's reign reminds me of John Nathan-Turner's from the classic series - from what I've read, JNT was much the same way. There's just been too many times in the last few years when people are saying "Oh, come on", or if there had been a little more thought put into the writing, some of these clunkers would have been reworked or abandoned for better things. I mean, did the Doctor seriously almost ask one of the Merry Men for a urine sample? Did that really happen? Did we really have an interesting story about trees taking over the world reduced to a teacher scaring off a tiger with a flashlight and a feel-good story about trees saving mankind? Did the Moon really turn out to be an egg that hatched and produced a creature that immediately turned around and laid another Moon egg? Did those things really happen on Doctor Who?