That's not what I said -- I said even if it's full of great details, that won't necessarily matter if they only resonate with fans of the IP. Isle of Berk looks bland to me period, likely because I don't care about the IP -- it just looks kind of generic and uninteresting.
That's the problem with building a bunch of single IP lands, and as I said, it's not just a Universal problem (want to be clear I'm not picking on Universal specifically here). Not everything has to resonate with every guest, but when it's almost a quarter of the whole park, that definitely matters.
Also, gearing whole areas specifically at children is a bad strategy (although I'm not claiming that Berk is geared towards children), at least if your goal is a park for everyone to enjoy. That's something you generally want to avoid, just as much as you want to avoid building whole areas that are only geared towards adults. If you're building a park solely for kids (something like Legoland) then that's a different discussion.
Regardless, I'm aware that I'm in the minority in that EU doesn't actually look great to me. I think the Nintendo area is a disappointment (although hopefully the Donkey Kong ride will be good) and Isle of Berk almost completely uninteresting, so that's basically half the park. HP is kind of an unknown... it looks solid, but also not nearly as interesting as Hogsmeade/Diagon Alley. Monsters seems like the clear highlight. Plus, the park overall is really lacking from an attractions standpoint for me.
But I'm also aware that they don't need me to be impressed!