Not so much. I'm 35, started programming at about 10 in my TI99-4A, typing games from magazines, etc. the usual stuff.
No way a 40 year old guy have more experience than me in general programming, unless he was working at Microsoft or IBM at that date, and surely they are about less than 10000 of those guys in the world. Of course there are 40 year olds that may have way more experience than me in a specific language or technology.
My point is that if computer tech is only 30 year old, then you won't find programmers with more than 30 years of experience, no matter their age.
No way a 40 year old guy have more experience than me in general programming, unless he was working at Microsoft or IBM at that date, and surely they are about less than 10000 of those guys in the world. Of course there are 40 year olds that may have way more experience than me in a specific language or technology.
My point is that if computer tech is only 30 year old, then you won't find programmers with more than 30 years of experience, no matter their age.