False. Non-reproducing individuals may extend the breeding lives of reproducing individuals. Ants and bees have evolved this to a nicety. The breeding individuals cannot even survive to breed without the non-reproducing individuals.
>Agressive individuals can make good soldiers and benefit their community, even if they die before reproducing.
I believe the point Andrew is making is that, insofar as non-breeding species do not pass genetic material from one generation to the next, they have no effect on the species per se. If you want to turn his point into an argument about the effect of experience and environment on a species, we might as well talk about how butterflies can start weather patterns that result in thunderstorms.
We are discussing evolution, not factories. No breeding individuals can survive without the sun. So what.