Yes, I agree, but the problem is that we have a generation coming out of our schools who believe it to be a matter of proven fact that the British Empire was evil (as opposed to possibly the most benign world empire ever known, certainly compared with Roman, Mughal, Zengid, Ming, Tang, French, Third Reich, Soviet, Ottoman - only possible exception imho is the Athenian Naval Empire); that sex is a spectrum; that US critical race theory applies in any sensible way to Britain, and a whole host of other empirically disprovable beliefs.
This is a problem because a culture which has no confidence in itself has no future. And we can see this in our declining birth rate, declining educational achievements, declining rates of successful business start ups, declining productivity, and declining mental health.
The very fact that pride in one's national history can be interpreted as being akin to bigotry or jingoism is a symptom of how much we've denigrated ourselves. Do we think Chinese children are told that Chinese history is a never ending litany of evil and prejudice? Japanese? Indians? Koreans? Mexicans? Poles (insert any other successful developing economy here)?
People like YAB may think they're terribly sophisticated due to their adherence to postmodernist and moral relativist beliefs, but what they are actually doing is actively harming confidence and intersocietal trust in our younger generations. And those younger generations will actively suffer, lose out and be impoverished by MCKEBNIs' supercilious and historically illiterate attitudes.