Boys don't wear uggs?😮

So I have a 10 month old son. And I have uggs for him come winter they are male looking in a navy color. I also bought newborn uggs for my girl due the end of january. I'm an ugg fan!! I have many pairs and think there is nothing more heavenly than toast toes! Lol anyways a guy friend of mine was just saying how I can't put my son in uggs becuz they are for girls 😕. They actually sell boys uggs on the ugg website so not sure why people feel this way! Anyways what are everyone's thoughts on this?