Absolutely. The biggest criticism of KonMari from Japanese is "no duh." Even the techniques for things like folding and arranging clothing so you can see everything at a glance are common knowledge among Japanese. Baffling.
For most of human existence the ability to find sweet and fatty things and eat them as much as possible and put on as much weight as possible kept you alive. Now it hurts you.
Similarly with stuff for most of human history stuff was expensive, you kept every good thing you could possibly get. Then in the past 60+ years stuff has dropped in price amazingly and keeping everything is no longer a good tactic.
Space has become more expensive that stuff in places where you can get good jobs.
A huge proportion of people reading this could go out and buy a caravan or a new car in cash. Few of us can afford a good place with much space in SV or NYC or Sydney or London.
My girlfriend was not a fan of the system when I described it. Alas, I still need to fold laundry.
It's a lot like a dish washer. By the time you scrape and pre-wash and load all your dishes, you could have just washed them and put them on a drying rack. The real value of a dish washer is it serves as that drying rack. Most kitchens don't have a lot of dedicated space to dry dishes.
We use one of these http://www.amazon.ca/dp/B00578QVGC in my kids room. On the top bar is the out of season clothes, and on the bottom bar, which is at an accessible height to my girls (4 and 6), we put the in-season clothes.
This works really well since little kids are way better hangers than folders. So when I take laundry out of the dryer, I basically make a pile for the kids clothes and then yell at them to hang everything up. They love it and it saves me lots of folding time. Plus, no wrinkles!
We got rid of our space-stealing dresser and just have a little plastic set of drawers for socks and underwear, which probably could just be in stuffer bags hanging off the clothesrod now that I think about it...