Earlier quoted context omitted.
Agreed. They use water in Iran, too. Other than religious considerations (that only water will really clean mess), it actually feels better and cleaner. Plus, their toilets have a different shape, something like this: https://behsakala.com/image/cache/data/products/-پارمیس-گلسا... As far as I've heard, this form of toilet is better and easier for colons.
But worse for your knees...
Grab a copy of a basic barbell weightlifting book, and you'll see - it'll say the same thing.