I think it's a question of our perspective. Tbh it's not like most of us sit down and watch kid's shows much these days (And even if we do we aren't KIDS anymore, so we won't watch things the way we used to), and on top of that, we don't remember all the bad stuff from back when we were young, either because nostalgia, or because we watched one episode, saw it was crap, and never watched again.
That all said, Lazytown.