Yeah, if by "massively" you mean he'll only be expected to have a possibly-fatal fall twice instead of five times.
Your post is extremely ignorant. It not only offensively and incorrectly ascribes daily showering to "prissiness" and "obsessiveness" (as if that's the reason I shower every day, instead of, you know, wanting to smell nice, look nice, and feel refreshed), it also claims that this is an American phenomenon (I'm Canadian, and many/most people I know shower daily. The ones I know who don't, smell). It also assumes all people are the same. Personally, I'd feel pretty sorry for your wife if you smell like I do after not showering that morning.
It's no more "bizarre" than the Japanese are bizarre for using those funky toilets with built-in bidets. Cultures may be different. Let them be different without judging, and without projecting.