Unfortunately, stereotypes have utility. No one likes being caught up as a false positive in a stereotype, but when you look at mass market politics / advertising / marketing they cater to charactures of their intended audience because for the most part it seems to work. Every once in a while someone takes it too far and a group gets offended, but let's not pretend that Cambridge is the only one doing this.
Stereotypes is just another name for abstractions and categorizing, which is how science works all the time. It's just that there are reality (statistics) based stereotypes and bad stereotypes (e.g. jewish conspiracy and such). Still, "all people are unique" is BS, more people within certain groups are more alike than different. X DOES Y because X belongs to group G is always a bad use of stereotyping (except if Y an…
Even reality-based stereotypes are bad, because they perpetuate social ills like racist discrimination. Slavery is reality-based economic system. Being true doesn't make it good.