It’s true of all combat sports, and, to some degree, any other sport in which you go face to face with your opponent.
And although it might be true that at the very very top levels people both learn to be more ambidextrous (so that there’s less of a mismatch between sides whether right or left handed) and are more experienced/skilled at dealing with left handed opponents, the early years of learning the sport will weed out fewer left handed people so that the top levels have more left handed people.
It’s true of all combat sports, and, to some degree, any other sport in which you go face to face with your opponent.
And although it might be true that at the very very top levels people both learn to be more ambidextrous (so that there’s less of a mismatch between sides whether right or left handed) and are more experienced/skilled at dealing with left handed opponents, the early years of learning the sport will weed out fewer left handed people so that the top levels have more left handed people.