The author asserts that the new episodes are stale, and then in the very next sentence says he hasn't watched a new episode in ten years. Pretty hard to take anything he says seriously after that.

This hipster affectation that older things are always better is quite annoying. People complain about SNL in the same way: the current cast is always considered terrible. Yet, five yeas later we inevitably look back on the older era with nostalgia.

The current incarnation of The Simpsons sucks, because it's always sucked. You just only remember the good parts of the old episodes because of the fallibility of human memory. This selective memory makes the good old days seem better then they were.