I think it's important to point out that 30% of men do not only not use soap, they don't wash at all. And with that, the point about people not using soap in the bathroom is lost. If people are that concerned, they should be and should have been concern about the epidemic amount of people simply not doing any form of cleansing, which is a completely different and much worse problem than simply not using soap.
This is why the rule of "wash your hands before you eat" is more crucial than "wash your hands after using the toilet" -- adhering to both rules is preferable, but only the first protects you from the people who don't follow them.
