I think skills can actually decline before then. I seem to recall a 32-year-old player I had drop a few times one season... But pops can happen. I've had a 30-year-old pop once.
At my age, I also get pops when I play, but those are usually my joints making those sounds.
Don't ask what sort of Chunks they are, you probably don't want to know. Blowing Chunks since Season 4!