This is an interesting article. I wrote out some thoughts on it.
I think Bruce is not the part of you that needs to lose, but rather the part of you that cares more about your place in society than your own goals.
This is helpful to me, because if I take Bruce to be an agent keeping me in line with my beliefs about society, then if Bruce is keeping me down it’s because I believe I’m part of the losing class. I’m doing a good citizen’s duty of being walked on so that others may stand taller.
I had this idea too. I think Bruce is an agent of social order. He causes us to lose to keep us on good terms with those around us.
I think he applies on a level even shallower than “I’m afraid if I enter the top 1% of success, my competition will be far too strong.”, rather Bruce is eyeballing the situation and thinking. “If I win I get positive X1 and negative Y1, if I give up I get positive X2 and negative Y2, if I lose while seemingly trying to win I get positive X3 and negative Y3.” And deems the combination X3 and Y3 to be the most favorable of all of them.