To me, yeah, pretty much. Right now he's writing Action Comics, JSA, Green Lantern, and Booster Gold, and of those, only Booster Gold and JSA are good, and even JSA isn't as good as it used to be. I personally think he's got two problems: 1) he's spreading himself too thin, and 2) he's letting his blatant desire to recapture the Silver Age overpower his sense for writing.
For example: Everybody thought Hal Jordan would come back and have a lot of new depth to him thanks to his experiences as Parallax and the Spectre; but no, Johns just systematically absolved Hal of any and all wrongdoing and returned him to his cocky attitude of the Silver Age. No development as a character whatsoever--Johns just swept 10+ years of the character's experiences under the rug.
Now, to Johns' credit, he does at least know the DC universe better than Bendis knows the Marvel universe. His attention to legacies and old-school characters is part of what made him great on JSA in the first place. Now, however, it seems to have been taken to new extremes, which are hurting his books as far as I'm concerned.