They all buy into it. It's the male environment from fifty years ago. I doubt they show much respect to customer cars either with that mentality.
The head of service and parts at the Mercedes Dealer I use is a 35 year old lady. She inherited a workshop with a bit of a macho atmosphere, but she cleaned up PDQ: a couple of techs left. She now has a couple of female apprentices in the team.
That Sytner Reading wasn't held more to blame makes me wonder...totally disgusting.