I grew up in a pit village on the Notts / Derbys coalfield. Grandparents were miners, Dad worked for the NCB when I was a child.
Every weekend we’d be on the bus or train up to Matlock / Bakewell / Cromford and other places, looking at the mills, the Arkwright legacy, cottages etc, the viaducts of the industrial revolution. The great houses, Chatsworth, Haddon Hall, Hardwick Hall. All explained in terms of architecture and the role and history of capitalism and the working class. My Dad considered it working class history.
Great days out walking along Mill streams and along gritstone edges that the millstones came from, with our lettuce and salad cream sandwiches in grease proof paper.
It is true that NT days out are not cheap, and the cafes and shops, and often the activities, can be laughably twee. I still prefer industrial archaeology to chintz curtains to explore. It isn’t a leisure interest if everyone, why would it be?
But why would anyone just write off history or a curiosity about our history and how things came to be as not a working class interest?