Nothing wrong with chip butties. (Actually they'd be as likely to say "curry and chips".)

The idea of Morris hooliganism is interesting. Maybe that is what it would take for people to recognise it as authentically English. And if we delved back back into history I think it highly likely that it started out that way. A lot of folk traditions are pretty rough if you strip away the veneer of respectability.   It's rather similar to the way so mnay of the songs were cleaned up for public consumption by the collectors and arrangers.

For example a lot of masked and painted folkl traditions were largely about people demanding money with menaces, wearing the contemporary equivalent of balaclavas and hoodies. I suspect in a few generations there'll be folkies reviving the fine old English tradition of "steaming."

My point being, there's nothing new under the sun, and these things come and they go.