Men’s ability to pee side by side but be so awkward around a breastfeeding woman

I have a 2 week old and have been breastfeeding her. The reaction of women is either completely neutral or positive. Not one woman has been awkward or uncomfortable.

But men? Absolute chaos. So far I’ve experienced them to not so subtly sneak a peak, completely turn their backs and make a huge scene despite there being nothing on show, leave the room or suggest I leave the room, or make an awkward comment comparing me to their wife who struggled to BF

Why? They don’t do all this when they’re standing side by side with their 🍆 out peeing. They behave completely neutral, think nothing of it and carry on about their day. So why such a huge reaction to a woman feeding her baby?