Great video. I think the reason it is hard to switch steering systems on a bike is that riding a bike is not an intellectual concept, it is deeper in the brain, muscle memory and probably reptilian brain, No time to process it in a conscious form. Same with playing a piano, hitting a tennis shot. Learning this is more or less hardware driven not software. He is right that at an early age, it is easier to rewire.
Using jkl and i o on FCPX is the same kind of thing. I am glad that I work for myself and don’t have to switch from x to 7 to PPro. OK, that labels me as over the hill, but there is some truth to that.