You can't be selective in quoting what Rossi has said.
Latter part of last year and from Qatar onwards this year he has said he has no idea what is wrong with and has publicly lost patience with Ducati for not fixing it (remember the Qatar tantrum - unrideable, can't be fixed with set up, I don't know what's wrong with it I'm not an engineer, same as the previous bike, I don't know how to fix it I'm not an engineer, nothing we do with set up makes any difference)
Then Audi top brass show up at German GP and pledge their support to Motogp - next minute Rossi is deep in talks with them and telling them he knows exactly what is wrong with the bike, him and his team have given Ducati a clear direction over the last few months but they haven't followed it. Er, what about your previous rantings Vale?
No-one - not even 'I'd like to tell you but I can't' Buell, has a shred of proof to back their statements up that he knows what is wrong with it. There is not one documented record or transcript of a Rossi interview or quote that provides any proof of him telling Ducati what they need to do. But as in the paragraph above, there are plenty of quotes from interviews where he has said he has no idea what is wrong with it.
All he has asked for, like those before him, is to have a better feel from the front of the bike. That is a world apart from telling Ducati what to do.