I think most (if not all) see it. Either it’s there in your own family or for someone you know. From my experience, there are a few reasons parents are more strict (in some aspects) with the girls. Either it’s for their protection (physical), their reputation, or just in how much they trust them (and they are many times proven to be right with their suspicions). In general maybe the boys are usually given more freedom in these matters but only until they mess up. If they do get caught doing something, then they also have to deal with stricter rules.