Really? All this over them attending a Beyoncé concert? Let's be real, Beyoncé IS one of the classiest of all of the current female artists. It's not like they attended some heavy metal concert and posted cryptic tweets about Satan.
Also, I know many EXTREMELY religious people who enjoy some "TiK ToK" and "Rude Boy" every once in awhile. Just because you believe in God doesn't mean you can't enjoy music.