I don't think he's shit, far from it but his 'style' just goes right over my head. Jeff in some of his early videos (so long ago I've forgotten the name... pre Revolution) is still impressive today and even for a big guy he always looked smooth. Ryan could do the moves but everything looked forced (in Revolution and Evolve for example) and the Manifesto thing I really didn't get because his normally forced riding then looked even more forced. Innovative, yes. Impressive, kinda. Smooth and stylish, not really.
Just to be clear, I don't think he's ever actually made that claim, that was just me exaggerating.