Well the shows I go to are packed and there are other people dancing.
I would love to actually be able to dance/move at packed shows. Not to mention the absolutely lame rise of seated only shows. Orchestral music, ok, but sitting down at a rock show is neutering the experience for me.
Their anecdotal experience is more a reflection of their own preferences.
The venues in my suburban area have only grown over the past 10 years and new venues have opened.
I'm glad it works out for you, but you aren't society.
I think before radio, sitting around and reading a book was pretty normal. Back then a lot of people lived in places where visiting the neighbors was a lot harder than it is now.