With some justification: whatever your view of Rossi's claims about Márquez' actions, Lorenzo had no part in them. Yet Lorenzo was implicated, and treated by fans and the Italian media as if he had some part in a wider Spanish plot. The charge was that he and Márquez had conspired to defraud Rossi of the 2015 title. All Lorenzo had done was be the fastest man on the grid, and win the most races. He had no part of the feud between Rossi and Márquez.
Above all, Yamaha conspicuously failed to defend Lorenzo. The Japanese factory tried to treat the affair as a dispute between Rossi and Márquez, ignoring the fact that Lorenzo's honor was being impugned by implication. Yamaha management did not stand up to Valentino Rossi, and try to tell him to leave Lorenzo out of the battle.
They canceled events planned to celebrate what was otherwise an incredibly successful season for the factory. The events of October and November spawned a monster, and Yamaha top brass failed to slay it.
Lorenzo must feel that his championship went unmarked. That must feel totally unacceptable to the Spaniard. Understandably so: the achievements of both Yamaha riders in 2015 were incredible. Rossi, for a brilliant season in which he led nearly all the way to the final race of the year, at an age when most racers are washed up and finished. Lorenzo, for putting in some utterly dominant performances to overcome what looked at times like an insurmountable deficit. If they were not teammates, they both would have been feted beyond imagination by their teams.
Yamaha failed to honor Lorenzo's achievements, for fear of offending his teammate. As difficult a situation as they found themselves in, not to celebrate Lorenzo's title was an act of cowardice. If Lorenzo goes on to beat both his replacement and Rossi on the Ducati, it will prove to be a very expensive act of cowardice indeed.
https://motomatters.com/analysis/2016/04/18/lorenzo_to_ducati_why_it_happened_and.html
