The problem is that people are speaking of two different groups of people when they speak of the boomers (and the boomers were more than two groups of people):

1. the activists who, in their heyday, brought about enormous social change and

2. the reactionary non-activists who later tried to tear that all down

The people who loved disco and the people who hated it were of the same generation.

I agree that people should avoid ascribing characteristics or assigning blame to entire generations like this. It just pisses people off and drives them into camps.