Sponsorship does have an influence because it is related to money, but for a manufacturer as big as Ducati, of course they don't really consider that because they themselves also have sponsors that they have to look after as long as the collaboration is still running smoothly. However, I see that Jorge Martin's move to Aprilia is not in the spotlight at the moment even though he was runner-up last season and current leader of the standings.
people pay more attention to the news about marquez because he has his own charm and very good performance in the last few races. besides who doesn't know marquez and how his championship record in motogp? compare with martin who until now has not won any championship, though he is likely to get the championship title in the current season. this makes the news of marquez's move to ducati even hotter to discuss because it is everyone's hope.