My own personal observation, now having in 3 years been to a whopping (for me, anyway) 16
of GL and the band's performances ...that this sort of audience response/behavior occurs more oft than not where alcohol flows more freely, and when it's a Fri or Sat night! Perhaps I could throw in the more 'stoic' type venues -this may occur less (like rather than an alochol-serving, outdoor venue)?
I too, prefer to relish entire songs without interruption - and have been fortunate to have the opportunity to attend enough performances to have had the pleasure more than once
.