What do you mean when a man says woman, I won't stop you?

Do not interfere in each other's behavior. You mean that men respond to women's actions or decisions with a calm and rational attitude. What he means is that he will not actively interfere or prevent women from doing what they want. Or men express their dissatisfaction or disapproval of women's behavior, and use this expression to convey that they don't like this behavior, but they don't intend to stop her directly.