We have a tradesman here in our apartment at the moment and he’s used the bathroom. We have a basket of guest hand towels clearly marked for that purpose and another basket to discard them in for washing. Now, either he hasn’t washed his hands or has used our towels! Either way; yuk! 😫
Maybe he thought his big workman's hands were unworthy of fresh pretty towels. I found that guests disliked my clean textile table napkins and are happier with paper ones or paper towels.
On a lighter note, I had a woman friend who refused to wash her hands after her weewees because as she said men don't wash after weewees. I never spied on menfolk in my own house and have no evidence either way.