This thread is sounding a bit like the old joke about the two ladies complaining about the food in a restaurant. The first says "the food is here is terrible," and the other says, "I know...and such small portions."
People seem to be upset about
(A) The fact that so many shows are crappy theme park extravaganzas
and,
(B) They're so expensive to get into!
There is a HUGE amount of theatre in New York City that is inexpensive. There is no way to begin to see all the plays (musicals, less so...) being offered on and off-Broadway, and not at exorbiant prices. The really expensive shows are generally aimed for the tourist trade anyway.
But if the question is what's bad for Broadway, (which is a very different question than "what's bad for theatre")it's the decline of shows that aren't aimed at the tourist trade, shows like "Sunday In The Park," that were written because the authors had something they wanted to say (amazing!) To some extent this is the same as it always was... big splashy musicals (like Hello Dolly) have ALWAYS had bigger audiences that more quirky little shows (like She Loves Me) But there seems less and less choices for those who want to see a Broadway show that's not a screamingly vulgar entertainment. I wasn't a fan of "Caroline Or Change", but wasn't it great that it got to Broadway? And this season has "Light In The Piazza", which we're all hopeful for. But for every "Light In The Piazza" there's 8 or 9 Good Vibrations."
Whoever made it to the end of this rambling post gets a cookie.
Behind the fake tinsel of Broadway is real tinsel.