The Simpsons has been around for so long people may forget or never even know that it began as a series of shorts on The Tracey Ullman Show. It was popular enough that they had their own Christmas special, now referred to as “Simpsons Roasting On An Open Fire”, a pilot that led to the first animated prime time series since I think either The Flintstones or Jonny Quest. It started a trend where other studios and networks tried to do their own but so far Fox is the only one to have really pulled it off, and even then there have been more failures than successes. As time, technology, and techniques have adapted over the years so to has the animation and general art style, plus you have to figure some of the older animators left for one reason or another and others came in.
Jazza, of the YouTube channel formerly known as Draws With Jazza until he opted to focus on numerous art styles, has done animation over the years, including the recent Saturday Night Showcase entry The Tale Teller, and decided to follow the evolution of the art style and animation of the show. While at some points the quality improved it came at the cost of quality elsewhere, as he demonstrates in this examination. Then I did a little checking of my own that may offer some explanations as to what happened to the animation.