It's one of those examples where lots of people do something, but then inexplicably the world forms a consensus that 80% of them get a free pass on everything, whilst the remaining 20% are front and center until the end of time
A local example is slavery. I've yet to see a textbook even mention Portugal or the dutch, yet they were some, if not THE biggest slave purchasers of all time... They got the free pass too, among others..
Im not sure why this happens, it just happens a lot.