Well, I was prime age for the early 00s anime/western fusion style of animation, and I remember the writing being actually quite good. Probably VERY good when compared to the tripe we get today. I enjoyed things like Kim Possible and Totally Spies even though I was definitely not the target audience for either, and Avatar the Last Airbender was so good I have rewatched it as an adult.

When the Calarts beanmouth style started to take over in the 2010s, I completely lost interest in western animation, moved to anime and never looked back. I don't think that was just a result of me getting older, I think the quality materially decreased over time.