Kids I know find all sorts of things ridiculously amusing and entertaining and it all seems stupid, brainless and mind rotting to me. But then again, the stuff I found ridiculously amusing and entertaining at that age was (I can attest, having gone back and watched some of it) was just as stupid, brainless and mind rotting. Some of it is not having a "sufficiently developed palette" for humor and entertainment. Some of it is because that humor and entertainment was genuinely new to me at the time, where as now I've seen it before so when it shows up in the kids stuff, it's not entertaining anymore. It's sort of the reverse of the "Seinfeld isn't funny" issue. We're not looking at something in the past and wondering why it was so great because it's been out shadowed by what it inspired. Instead we're looking at something from today and wondering why it's entertaining because we've been entertained in the same way in the past.
Apart from that, what surprised me was that it had vibes of 1950s: watercolor still images, and the music score not with analog synths (that we'd expect from the '80-s), but a (small) orchestra with TRUMPETS leading. (This was the biggest '50s factor for me.)