Fat Albert and Enchanted did it too.
I had no idea there was a
Fat Albert movie. But you're probably on to something with the
Enchanted comparison. That might be what got people to see it as a cliché premise; it was even set in New York just like
The Smurfs was.
But yeah I'm specifically talking about the wave (some would say plague) of reimaginings of classic cartoons. Come to think of it,
The Smurfs was really the first time the cartoon they wanted to adapt wasn't already set in some pastiche of the real world with upwards of one human supporting cast member.
Scooby Doo,
Garfield,
Yogi Bear,
Underdog,
Alvin and the Chipmunks, and of course
Transformers were kind of tailor-made for lazy live-action adaptations. Ironically, so was
Rocky and Bullwinkle, so the "sucked out of TV land" thing was purely a creative decision in that case.
And on that note, Sonic ending up in "the human world" isn't even limited to
Sonic X; it's happened in multiple games as well. Not good games, mind you. Oh man, can you imagine if they decided to make Soleanna canon to the Sonic movieverse? I could just about believe they could make it work.