FiveFrameSwing
Banned
Whether he has a good understanding of it or not I don't know. But he actually said that some hitters have their foot more/closed than others. He actually mentioned Pujois. So for just that reason(foot closed vs open) alone I don't think we can discredit his knowledge, or what he was saying about this topic
Here is Pujols with his front heel landing such that his front foot is open ~45-degrees. The scissor action is still intact.