Don't know where you heard those/that quote, I have had a Hyrulian/LoZ 2DS XL since release day, with no cracks anywhere on-screen /hinge & or top, inside or out. I don't doubt it was said though... Hyrulian has a multi-layered pattern, which contributes to the shield on the top, but they all have more than one layer I believe. The Hyrule edition was a Game stop exclusive IIRC.
I can't compare it to others since I've only held this model, but this top doesn't seem flimsy to me.
PS and I have dropped mine several times!