Men don’t care if women see them peeing?
Unless they are ashamed of their manhood, not usually.
I frequently go into the men’s restroom to assist my disabled husband. I won’t go in if there’s already someone in there, but once I’m in there, it’s not unusual for a man to come in, see me in there, and proceed to use the urinal. As soon as they come in, I always announce myself, and tell them I’m just helping my husband, and I’ll be gone in a minute. They can’t miss seeing the wheelchair. Before the door closes behind them, they know there’s a woman in there, who is aware of their presence, and who will be gone in just a minute. They don’t care. They belly up to the urinal. A couple times they’ve seen me and retreated, but that’s rare. In my experience, most men don’t care.