My word, what an acidic little turd you are. Can't you make a point without the insults and swearing. It would be a lot shorter if you did.
You main gripe seems to be people aren't up on the Yamaha development around the time that Rossi joined. You suggest people do their homework. Well, here is your homework. Below is what Furusawa himself said of M1 development (I assume you know who he is with your endless depth of knowledge) I'll copy and paste from another article where someone else was also ignorant of the facts (or chose to ignore them)
First though, I'll admit you are right on one thing. the 2003 Yamaha was not a good bike. However, that was not the bike given to Rossi when he joined. Here is what Furusawa said.
Furusawa said (from his own account - look it up if you want it all) he knew they'd bombed in 2003 by going in the wrong direction. He designed a new engine and new frame for 2004. At the first proper company test, all the bigwigs were at the track. The test rider came in and said 'it feels slow'. All eyes immediately turned to Furusawa waiting for him to fall on his sword. The test rider continued 'but that it is because it is so smooth, it is actually lapping faster'. They checked the lap times which verified how good the bike was. This was before Rossi joined - understand that bit - before.
When he joined, he was actually given four bikes to try, one of them being the bike used in the 'bigwig' test and the one Furusawa expected Rossi to choose. Which he did. By the time Rossi got on it it was well developed (or just worked well out of the box) - hence the lap record he set on it.
So if in your opinion he was able to sort the Yamaha in 8 weeks because he is so good at developing a bike, perhaps you can be the first person to tell us why he hasn't been able to develop the Ducati in 10 months? Everyone else who makes the Yamaha claim goes strangely silent when asked that question.
And see if you can reply in normal English