Earlier quoted context omitted.
This particular one wasn't going anywhere useful. That's presumably why the comment said "when [collective they] finally get lucky", not "when [individual they] inevitably get lucky". A certain percentage of your species having genes encouraging risky/stupid behavior is likely somewhat useful.
A lone penguin wandering off is never going to create a new, badass species. There would need to be an entire group of penguins breaking off to establish a new population and eventually a new species. And they don't necessarily become more badass, just different; whatever alleles the founders had will be more consistently expressed in the new population, and eventually they may diverge enough to be a new species. Reg…
Sure. But two might.
Or the behavior may sometimes benefit the colony a few coves over with some new genes every so often.
See also: Homosexuality in various animals, including humans. Individually, not great for your genes' survival. Collectively, seems to have enough of an advantage to the species to not be selected out.