How did you 'grow up with working class pride'? I don't think it was a concept that was even mentioned when I was at school.
My observation was that there was a great deal of hatred and suspicion of people who created businesses, jobs and wealth combined with a complete lack of understanding of how market economies work. I don't think anyone had heard of entrepreneurs in the 70s, much less wanted to be one.
The heavy unionization meant that sons did follow their fathers into the pits, having gained no other useful skills. They joined the constant struggle against the evil owners of course. Union members struck in solidarity with other members because they too felt victimized.
"Work class pride" meant feeling solidarity with other people who had similar lack of wealth creating skills. It was inverted snobbery with flat caps on.
My father was in the education sector, an area of high unionization and complete cluelessness of economics to this day.