Old as in 80's and 90's: Yes, they beat every other era of cartoons
New as in 2000: There WERE some amazingly good cartoons, but they either got cancelled (Courage the Cowardly Dog, Sheep In The Big City, Megas XLR, Time Squad, Whatever Happened to Robot Jones, when he had the text to speech voice I mean, when they switched his voice to that kid, I started losing interest...notice how Cartoon Network got rid of EVERY single good show). Orrr, they were horribly mutated over the years (Such as Johnny Bravo, whereas I didn't like the first season too much, I loved the second season and think it's one of the funniest seasons a cartoon ever had, then the third season they went back to the old animation, art, AND humor style of the first season for unknown reasons. Don't even get me started on what they did with Dexter).
I'm not too into the older cartoons like Scooby Doo and The Jetsons and other stuff. The Flinstones and Loony Toons are about as far as I can go for cartoons from that era.