Animation has evolved a lot over the years, but when CGI was first introduced, things were a bit rocky. Some of the worst CGI in kids' shows took place in the '90s and 2000s. As kids, we didn't see anything wrong with this animation because it seemed so new and advanced. But looking back on it now, it's difficult to believe we were able to sit through some of these low-quality shows. The animation in a children's show can have a huge impact on how interesting it is, so it's surprising that some of these shows lasted and even thrived.
Whether you enjoyed these shows as a kid or not, it's safe to say kids nowadays have much better CGI for their shows and movies. It doesn't take much to keep a child entertained, but the cooler the characters look, the better. While some of these shows were great for their time, they have not aged well.