Does anyone complain about the scantily clad marchers during Mardi Gras, women throwing their panties and all? Anyone ever complain about hetero couples practically mating on a grassy knoll in a park? I'd rather imagine they must, or how come it's possible to write "this country, being SO puritanical".

Not that you'd need to be puritanical to complain about stuff like that, any more than about those who bellow into mobile (cell) phones on public transport, or about other instances of bad manners and disregard for other people.