Is it odd? Here's what I wrote-
Arguably one of the greatest TV shows of any kind. When you end up saying things like, "Sure, the FIRST TEN SEASONS WERE AMAZING, but the NEXT TWENTY-TWO were only sporadically great," you know you're discussing one of the greatest shows ever. D'oh!
To make this explicit- if you are saying (as you are, with this chart) that a network show (which usually has 20+ episodes a season, not like the premiere TV we get now) only had ten straight seasons of being one of the greatest shows ever, then what are you really comparing it too?
No other animated show in my top 10, other than South Park, even made it to 10 seasons. Batman: TAS ran the longest, for 85 episodes. The Simpsons exceeded that by the beginning of Season 5 when it was still well within the prime. The "undisputed amazing run" of the Simpsons lasted for for 226 episodes.
Maybe you haven't liked the Simpsons in a while; but without the Simpsons, we wouldn't have any number of other animated shows.