I do not agree fully on that, but yes the rules in Islam can be used in the wrong way by some. Majority of muslims do not treate woman badly
Have you ever visited a Muslim area near where you live? I had a studio in Preston where over 10% of the population are muslim.
While some muslims consider equality of the sexes to be right, most do not. They follow the teachings of the Qur'an (i can dig out the verses if you want). Look out of the studio windows and see subjugation of women, meekly following a distance behind there man. It was very sad to see.