John Mayer: Growing Up?

A small observation regarding John Mayer’s lyrics and their evolution.

In his song My Stupid Mouth (released in 2001), Mayer bemoans the fact that he keeps putting his foot in his mouth:

My stupid mouth has got me in trouble — I said too much again. […] I’m never speaking up again.

In 2007, Mayer released Say, where he recommends clearing your mind and expressing yourself:

It’s better to say too much than never to say what you need to say again.

There’s an obvious nod to his previous song in that lyric. An example of John Mayer’s growing maturity as he progresses in age?