What is the deal with mothers and young sons?

I don't know how many times I have gone swimming to find a mother walking into the men's change room to see how close to being ready her son was. They have very little concern if other men may be in there changing and naked. Most times I might get a quick sorry or excuse me but hardly ever do they leave right away. The ones that do leave right away don't do so until at least taking a quick peek at everyone in the room. I had one mother remain in there for over 10 minutes while at least half a dozen men were in the dressing and undressing. When asked to leave by one of the men she had an attitude and told him he was nothing special and had seen it all before. She even argued that she has a son she sees naked and he is not much different. She even told him to put a towel on if he didn't want to be seen naked. Other mothers have even sat down in the change room waiting for their sons to finish. They literally watch guys dressing and undressing. If it was the other way around with men going into women's change rooms we would get arrested.

Are these women just using their sons as an excuse to see naked men?