No he didn't, he said the family crisis between Lilo and her sister was so strong that whenever if returned to the aliens it was disappointing. But he also acknowledged that he shouldn't complain about what a movie isn't, only what it is.
I like Lilo and Stitch a lot, but my main problem with it is that it feels as if it went through heavy editing at some point and wasn't pieced back together properly. At the start of the movie it's made very clear that the aliens have no idea what Earth is. They mispronounce it, and become shocked there is an island (Hawaii) for Stitch to land on. The head alien and her people know so little about the insignificant planet that they have to call in an expert who knows about it because its a habitat for an endangered species: mosquitoes. Near the end of the movie, the scientist and his mosquito expert switch to Stitches side for no reason (it's literally resolved with an 'okay!' when Stitch requests help, after they'd violently tried capturing him). After this, the head alien personally recognizes Bubbles (a social worker human being on Lilo's case) as a secret agent who was involved with Roswell, despite having no idea what Earth was at the start of the movie. All taken together it's really jarring and its clear the script was heavily redone after it was too late.