Unfortunately, it is people like yourself that add a lot of fuel to a very small fire. The activities that you say Sri Guru Nanak Dev Ji would not approve of, many practising Sikhs engage in. It is people like you, the fundamentalists, the literalists, that take a guru-Ji's words and twist them to create disharmony and inequality. The war that you are creating, will not last, for love is a lot stronger than religion and love will create peace. You'd be better off asking my wife if she feels restricted. For you to place a judgement on something that you prove to have no understanding of, is simply ridiculous, ergo your argument is void.
It's people like you that chase power for their religion. What you fail to understand is religion was formed to oppose power. Whether you be a Sikh, whether you be a Hindu, whether you be a Christian or whether you be a Muslim, it doesn't matter. When the love to power is overcome by the power to love, only then will peace be created.