No, I don't agree. Should one or two of the attractions be for the kids? Sure why not. But the entire park is shifting towards that, and there's no reason for that. The park should still cater to all ages, rather than a small demographic. And on top of that, why must an attraction geared to the kids have to be a cartoon? My favorite attractions as a kid weren't familiar cartoons. They were rides that were original ideas. Like Figment and the like.
On top of that DAK and Epcot are more slanted to the "reality" side of things, giving AL and TL the opportunity to cater to the fantasy of the themes adventure and tomorrow. Meaning there's absolutely no requirement for them to be kiddy. Adults want some fantasy as well, but also don't want to be treated like they're five. Throwing them attractions like IJA in AL and something like Tron in TL would go a long way in helping the "kiddy only" reputation it's gained.
The ONLY reason I'd be okay with Stitch is because the show is better than UNM. But still the original Tiki Room appealed to kids, and would still appeal to them today.
Buzz is fine. And I even think Monsters are fine, it's just a crappy attraction.