"blandness"---i.e.    people having a good time, not protesting anything, with lyrics you can understand and sing along with.   Admittedly this may be an un-folk attitude.

But who knows; there may be more:   we hear so much about Puritanism in the US;   maybe the UK still has its own Puritan streak.

As Jimmy says elsewhere:    If we couldn't laugh we would all go insane.