I actually agree with this point. I think having "culturally relevant" IPs that predate Disney and are part of a country's folklore involved in the pavilions is a great way to 'save' the WS. Otherwise they'll all end up like Norway, which is now much more of a Frozen pavilion than a Norway one.
Also, I have to say, I'm 27 (thus an adult) and I find the WS to be pretty boring, as far as Disney lands go. Parts of it are interesting, but other parts can be pretty barren.
Honest question: If you don't plan on eating there, what's there to do in the UK, Japan, Italy and Germany? Walk around a gift shop? I need more than that, especially if I'm paying to get in. I think most people do.