daisya, you can call them hypocrites if you like, but I bet you know loads of people that get married in Church, have their children Christened, use the Church for funerals and put CofE on the hospital records but never attend a Sunday service.
A lot of people are born in to a religion, class themselves as belonging to a religion but don't follow the rules of the religion at all.
Many people consider themselves atheists but are still branded Muslim, Jewish, Sikh, Christian, whatever because of their heritage.