It is very common that a post advertising for a "Senior Software Engineer" requires 5 years experience, maybe 7.
I myself have 27 years experience working full-time, several full-time summer jobs, and part-time jobs while I was in school before that. I wrote my first program in 1976.
Only once in my entire life have I seen a post that asked for coders with 15 years experience.
I find it odd that this only happens, to the best of my knowledge, in the software and entertainment industries. I don't think it's the case for electrical engineers, for example.
Would you want to hire a 22 year old surgeon? If you were falsely accused of murder, would you trust a 22 year old attorney to clear your good name?
Help Me Out Here, I'm Begging You.