I was watching a zealand video about 10 myths about fm or something like that.
I was confused about something he said in the video which was that players who start training to learn a new position and players who start training to learn how to develop their weaker foot cut into their "current ability" by doing so. This led me to believe that while players are doing this sort of training, they are not quite as good as they would be otherwise.
But this doesn't really make sense to me and makes me feel like I misunderstood him. I think that what he possibly meant to say was that this type of training could cut into the players potential ability. He even said something along the lines of "training the weaker foot will hinder their overall development."
Can anyone interpret what he was saying for me?