I thought about this for a few hours and decided that: yes, intention matters, but action is what shapes the world. Action can be as passive as apologizing or pressing a point, as well as in its more obvious forms.
Intention is the counter-harmony to action. After all, intention can oft be used as a prediction of the likeliness of action, the kind of action, and what action it would be. And sometimes not. Intention shapes the possibilities of action.
I wish I’d taken philosophy in college. I might not fall into philosophical and logical traps. But on the other hand, I did grow up trying to make sense of my father’s random d20 intentions as they interacted with the dense probability tree of his actions.