I find it very odd that this piece ASSumes that one change in a belief makes e everything suspect...maybe it is because I have lived ,long enough to know that the entire "house" will not fall down if one or even several things are different? For example, Pete Rose was a terrific baseball player. Even though he gambled on games, he is still one of the best there ever was physically. And I'm betting plenty of people in George W's day had teeth made from slave teeth, and how in any way would that negate his acomplishments?
Tim Urban made a blog post over on Waitbutwhy? where he goes into depth on this subject and how it relates to society and history. The relevant part is part 7, and it's a lot of reading but defiantly worth the read because all the parts build on each other.
I resist a lot of new ideas because to embrace them means it is no longer my world. An in home medical evaluation recently had the examiner telling me I am a very angry person, and she thought it was because of my ex-wife. I said, no, I am angry with those who tell me I have to be angry with my ex-wife. They do this because they are secretly racists.
Let me put this another way on my perceived anger. MeTV has a lot of older programs that interest many people. I like MeTV and I liked "Happy Days." At my age today I am aware that my happy days have come and gone. They are most likely not coming back again. I don't think a councilor or therapist can make me see this any differently. This is the "anger" that you think you see.