You could use that same logic and say "Guys, anything less than a roof and seat belts is foolish."
Riding is a calculated risk. Riding, even in full gear, is riskier than driving a car. Which is riskier than driving a full size truck. Which is riskier than driving a tank. Which is riskier than sitting on the toilet. When I go out to do anything, I weigh the risk vs. the reward. If you're a weekend rider or trackday rider, it;s very easy to only ride in full leather all the time. If you use your bike to commute or run errands, it's not as easy. I can't work in my leathers. And I can't wear work clothes under my leathers. And since my day to day wardrobe could be anything from jeans and t-shirt to suit and tie, I can't keep work clothes at work to change in to. I also go see clients a lot and can't keep work clothes at their office. I also can't ride with a bag full of clothes, a laptop, assorted paperwork and whatever else. So depending on conditions I may wear riding pants and jacket, or just jacket. Always at least a jacket, gloves helmet and as appropriate foot wear as is practical. But leathers are reserved for trackdays and days when I'm going out to only ride. That is just how it has to be. If my choice is less than optimum gear and riding my bike, or taking the car, the bike is winning, everytime. Besides, if I'm going to get whacked, it's most likely going to be in city traffic by a bus or something. Leather is great for abrasion, but no more able to support the weight of a dump truck than denim is.
Does that make me a squid or a fool? I don't know. Or care. I ride for my reasons, on my terms. I know the risks and accept the risks. I'm a grown up, and I can.