Lilo and Stitch was an outright success among a series of very modest successes or outright flops. It stands out (above the crowd) because (just to stick with the decade it came out) it was released after Dinosaur and Atlantis, and prior to Treasure Planet, Brother Bear, Home on the Range, Chicken Little, Meet the Robinsons, and Bolt. If I included the post Lion King lineup the list would be even longer. I know that people are going to respond with "but I liked X", but performatively they were either modest successes that only still get mentioned because people saw it as a kid and have nostalgia, or were outright flops that nobody saw or cared about even when they were new. And that's fine, a lot of the classic Disney movies aren't real great and often talked about either, like Dumbo, the Sword in the Stone, and Aristocats. But people have their nostalgia glasses on and are seriously forgetting how bad things were starting with Pocahontas.
He also gave us California-themed California Adventure in southern California instead of Westcot. They're still trying to make CA a park people actually want to go to (and for longer than half a day) while keeping Disneyland proper relevant. Remember, when CA opened it had a couple of unique but really cheap rides, a handful of your fairly generic carnival rides, a whole section dedicated to scammy carnival games (not sure if it's still there or not), and that was basically it. Pretty much everything that is actually still there has been heavily rethemed.