> This is also probably why startups tend to hire younger people, rather than older developers who've worked for places where the risk tolerance is very low and thus they take the time to make sure things are very solid.

Appropriate older developers should have an even better handle on when (and how) to write good code and when (and how) to write bad code. Moreover, their bad code will be better, and produced faster.

Young coders are hired mostly because they are cheap and don't understand stock options.