Yes. Animation quality has always been a big thing for me when watching cartoons. I grew up watching shows like The New Adventures of Winnie the Pooh and Disney movies like Aladdin and Beauty and the Beast, so I had a pretty high standard of what a cartoon should look like and could tell if a show looked bad.
I was a big Sonic fan as a kid (well I guess I still am

) I remember seeing commercials for Sonic SatAM and was happy that Sonic was finally getting a cartoon and also excited because the animation in the preview looked pretty darn cool.
Then I saw Adventures of Sonic the Hedgehog one day while flipping through the channels and said
'What is this!? This is nothing like the commercial! It looks awful!' (I didn't realize at the time that there were two Sonic cartoons) I hated AoSTH because it didn't have the high quality animation that SatAM had. A big thing that bothered me on the show was the way the sky was drawn, which I remember saying 'looked like puke' and wondered how is it so hard for the animators to just draw a plain bluer sky with a few white clouds? I still stand by that statement. Though, being the devoted Sonic fan I was, still watched everyday after school. I really liked AoSTH, I just HATED the animation.
I hated the Kennedy episodes of Tiny Toons, and wondered why the show went back and forth between looking easy on the eyes to absolutely awful.
Dexter's Lab and The Powerpuff Girls were great shows, but I thought the animation on said programs was horrific and looked like something a 2nd grader would draw. Thankfully, the animation on PPG improved after the movie came out. Same cannot be said for Dexter.
Though I did notice that the intro to 'Dial M for Monkey' boasted a higher quality animation than the series itself. The color scheme was better (Shading was used for once) There was a bit more detail put into the background and there were some lighting effects used when he was shown preforming experiments on Monkey.
I also hated anime as a kid because they never finished the outline on the character's eyes. They would only be halfway outlined and that irritated me a lot.
Wha--WHAT. The 97 episodes were a gigantic step backward in terms of animation quality. In years 91-93 the series had some great animation and suddenly it all went to crap when the show got revived in '97. I hated hated HATED the animation in those episodes.