Chelsea are a volume trading side, just like they were in 2014-16, when they lost KDB and Salah.
Madueke posted some of the best numbers in the league last season but ultimately didn't convince low IQ Chelsea fans for two reasons
—Misplaced expectations: Chelsea lacked a 1v1 dribbler last season. They understand Palmer is not the guy to do that so they cast that expectation on someone else, on Noni who is more a carrier-shooter type like Sane/Raphinha
—Ugly aesthetics: Madueke is black, confident, and a striver with overly long legs. So he doesn't look nice on the eye when executing actions but he never stops trying. This should remind you of players like Elanga, Maguire, Havertz, etc Players who don't naturally please the crowd and look a bit awkward
I think there is a secret 3rd reason nobody is discussing.
—Imbalance: Chelsea lacked offensive balance last season and that affected the productivity/effectiveness of their best players. Madueke plays best WITH a creator + a dribbler who can command the ball and create the moments he needs to capitalize on. But Chelsea didn't have that and imbalance translated into burden that affected output.
These 3 reasons would all change at Arsenal. And in two years, everyone will be discussing how Chelsea let one of the most devastating transition players in the world go to their rivals for cheap.