People seem to care about "thin and light" laptops, at least my colleagues do. But since they don't pay for these out of pocket, I can't tell how important it is to them, measured in currency.

Now, I don't know about surfing, but I regularly strap my iphone to my motorbike's handlebars to use as a GPS. No case. I don't particularly enjoy doing this under pouring rain, but it does happen, and the phone gets drenched. However, to the point about people wanting this, yes, I do. I would also love a replaceable battery. My old Galaxy S5 had both features, so saying that waterproofing means non-user-replaceable battery is a lie.

I'm washing my expensive flagship phone with water and soap every week, for almost a decade now. Never had a problem because of this (except the USB port getting disabled for a few hours until it dries).