Idiots would still go for them
I've played a shite ton of games and I can honestly say not once has a goalie grabbing the corner boost ever led to them making a play, never mind one that required full boost. Not a single damn time. It's literally a 0% play that can only cost you. Your a moron if you do it. And morons are incapable of change because, well, they're morons.
Horseballs. I've used 100% boost to make long aerial picks from a deep defensive position countless times. After initial clash if I'm at goal-line and that ball is moving to an empty spot toward the opposition, I have no problem using my 40-odd boost to quickly hit the corner spot and return to goal-line.