TFA says this is for commuter flights. No passenger on such a flight should be urinating, but anyone who has a health problem or something should just request an aisle seat.
That's a pretty weird statement. It's not really abnormal to want to go to the toilet every 1-2 hours.
I was merely hoping to correct a possible misreading of the article's (literal) contents, which I see in retrospect makes me to inadvertently appear be the subject of xkcd 386 :)