I agree - it's basically a new strain of puritan thinking. The problem is that unlike established religions - where you can step away and say "I don't recognise

I agree - it's basically a new strain of puritan thinking. The problem is that unlike established religions - where you can step away and say "I don't recognise your moralising" with pretty much no repercussions, the line between "progressive left" ideology and wider society is much less clear - and so fighting this type of thinking can have real repercussions for your career or social life. It's not really worth rocking the boat.