Higher, your comments are very true. Unfortunately the society around us has become decadent. Even at government level, the Judeo-Christian attitudes of the founding fathers of the USA are being scorned. Liberalism has become a "religion" with a clear agenda of turning 21st century Western Culture into a replica of Greek culture which was a most hedonistic society. That being said, there are many moral and upright Americans who abhor this matzav as much as we do. 

Regarding those who say "feh", I would say the following. There sadly are individuals who always are the ones who "happen to notice" the latest pritzus trends etc. Unfortunately, many of those fellows are in need of help, being hyper-focused on sex themselves. They "enjoy" being on the forefront of inyanei kedusha, probably because they get aroused by it. I state this after having spoken to some such fellows that BH got help and got out of this masquerade. (One was actually a chosson rebbi - imagine his turmoil, the feelings of hypocrisy were destroying him).The professionals they used first demand was -"You may not advise chassanim, you may not go to rabbanim with the latest clothing issues, you may not get involved in shalom bayis issues, etc". These guys are not reshaim, they are cholim.

However there are just as many or more, healthy and normal individuals, who do not notice "everything", but from time to time come across something repulsive (nowadays it's almost impossible for this not to happen). When they say "feh!", they mean it! They are disgusted with the fact that they are raising a family of sweet kids that have to witness this cesspool. 

Let's all daven that Hashem shower a ruach tahara on the world...…..A world of no more "feh"s…...