I think about it but not too much. I have two daughters and the youngest is a competitive gymnast so I am constantly surrounded by young girls. I decided a long time ago not to let fear of false accusations influence my behavior that much. I have my own daughters alone a few times a week and sometimes they have their friends over. Anyone that thinks anything of it can go straight to hell but nobody has ever mentioned it.
The only problem I ever had was with a psychologist oddly enough. My daughter was having emotional problems and the psychologist asked her “Has your father ever touched you in a way that made you feel uncomfortable?” My daughter said “Yes” so she reported it to CPS. What she didn’t ask the then 6 year old was what she meant by that. What she meant was that I patted her on the back once when she had a sunburn. I have to give credit to my ex-wife. She defended me and opened up her full Italian temper on the psychologist.
I feel the same way about the fathers of their friends. It is perfectly fine for them to be alone with them because I know them and vice versa. My daughter has a male gymnastics coach that she really likes and has private lessons sometimes. There is nothing wrong with that as long as I know them well.
I don’t like this new regressivism especially when it is focused on sex segregation. It is going in the wrong direction.