Should have stuck with your original line of argument because this makes even less sense.
So his crime is that he is still competitive, but not as good as he used to be? You would be hard pressed to find any human being in any sport that is capable of that.
There isn’t a single one of his contemporaries who would have been remotely as fast as him at his age, given whatever bike. There are people less than half his age who would never be as fast as he is on his worst day, given any bike.
Every sports person has a peak. Rossi’s peak is behind him and everyone knows that. But even in the tail end of his career, he is still extremely competitive. That happens with special racers. And such racers have a claim to being an all time great.
If that’s not enough, 9 championships across all classes, 2 stroke and 4 stroke premier titles, being one of the main inspirations for almost every rider who came after him and middle fingering max biaggi at 230kmph, wheels on the grass as he recovers from getting elbowed out will do.
Stacey Moaner would have cried in the showers and wrote a poem or something after that.