I think its true in most things .
Unlearning is relevant to boxing too,emptying yourself of the first things you learnt and had to use just to survive in the ring at first in the basics .
Then you free up and move into bringing your natuaral abilities and even your personality into the ring,thats where flowing around,moving on angles in comfort or saftey ,pushing the boundaries with minimum risk when you just know your safe to do so on the opponents reactions brings out the best combinations.

Then again some people attest to a state of 'like being taken over' goin on auto pilot, when placed under extreme pressure and they go into the zone where they cant seem to do a wrong thing from that point on...be nice to be able to have some control over when and where that happens
I think all emotion has to leave for that to occur even slightly, so ultra aggression may shut the door to it, as would fear of any sort or maybe any prethought about whats about to happen might block it too