Iains: Not sure how you got shanties out of all this. Crosspost maybe?

RE rudeness and folk in general:

Attitude is an internal individual psychological construct. Hospitality and entertainment are external relationships.

If both the venue owner and the audience all share your attitude, Bob's yer uncle. If somebody, somewhere, calls you something dirty, it is you who have failed to be accessible, interesting and entertaining. That's one job, not three.

And let's make no mistake, audiences do like to hate. It's a product. Always has been. Between the so-called “Mandela Effect” and dogma/propaganda/fake news, folks can be managed to hate things that do.not.exist.