Dive dry? Urinate before getting in the water? Any number of solutions that do not require you to urinate on yourself. It's not a matter of infection or sanitation, it's a manner of acting like a civilized person. I don't want my urine on myself or anyone else.
You know you have some strong opinions and it sometimes seems to me you like urinating on people about lots of things. Not exactly civilized, polite behavior either.