A person who always follows the "ask permission" strategy ends up with an ingrained unconscious belief that most things they could do are ultimately bad ideas. They end up limiting themselves and only taking actions that are safe, uncontroversial, and unlikely to result in a "no".
A person who always follows the "ask forgiveness" strategy will end up getting slapped down a few times and occasionally get a reputation as a dick and have to find new people to work with. But over time, he'll learn a good intuitive sense of both what the limits are (because he's broken them so many times) and why the limits are there (because he's seen the consequences of breaking them).
All this means that eventually, the person who asked forgiveness a whole lot eventually ends up being the "permission granter". Eventually he ends up taking an opportunity that the "ask permission" folks deemed was too risky and it works out, and people remember the one huge success more than the dozens of minor messes.
So while you may be justified in labeling the "ask forgiveness" guy a dick, that won't stop him from replacing you. Life is sometimes unfair, and assholes sometimes win.