Seems crazy to me. In those kind of facilities I think that I'm likely to catch less from my immaculately maintained dick than from the facilities!
I comletely agree with all that NIMBUS said, though I have only quoted the last sentence. Automatic taps are a big improvement and when leaving I will use my foot or shoulder barge a door than opens outwards rather than use my hands or, if the door opens inwards, I'll use the little finger of whichever hand is right for the side the door is hung. I figure that way I am least likely to transfer something to other things I touch including food.
Yes, urine is usually sterile, no dicks are not but whether they are less sterile than any other body part I am not so sure. The skin generally is colonised with Staphylococcus and if we were to succeed in eliminating them we would then have much more trouble with fungal infections.
The real thing about washing hands after using the toilet is after defacating. You absolutely don't want to transfer E.coli from your anus to your mouth via your hand. This is also the mechanism by which the eggs of intenstinal worms are spread. Someone else with worms wipes his ass and has his finger go through the paper, wipes it off on the wall rather than washing, shakes your hand and then you eat a sandwich without washing your hands first and now you have worms too. That's why in areas where water is scarce there is a convention of only ever wiping with one hand and eating with the opposite one.
So in the case of facilities with filthy taps there is much greater risk of getting something nasty from someone who went there to shit than there is from your own cock.