I think anyone can be stupid about it but it's not a reflection on every player or the game.
I actually went to that park today and DS had a total ball and yeah it was busy but people weren't rude or pushy, in fact quite a few young players played footy with DS and no one was crowding the equipment or anything. It was actually quite pleasant!
I'm sure I might feel differently if I lived there and people were being rowdy at night though and I think maybe they need to have a curfew or something on pokestops in crowded residential areas. Not because everyone who plays is an idiot, but there are always a few who ruin it for others.
Personally we loved sitting out in the sun, taking turns playing with DS and we went for a lovely walk along the foreshore afterwards.