Saw that the other day, all he basically said(from what I understand) is that we're able to subject to ourselves the bad series over there that we couldn't before years ago and that's why it's "seemingly" going downhill recently when there was always crap, back then and now. But who didn't know that?
And nevermind Japanese cartoons' problems, all that's really going downhill for them is the "craze/fad". There should be videos complaining about how our animated shows are going downhill. Enough Spongebob clones and ugly, poorly drawn caricatures already.