Snowflake Royal Thing is, from my incredibly poor 5 a side standard, and watching professional football for a quarter of a century I kinda see what he probably means and it's good. He's just taken it way too far.
You can't just try to man mark because that will pull your shape all over the place and create space to allow people to burst into. You have to mark certain areas of space and you have to have hand overs, but equally you can't just ignore the players and stick to the space.
It has to be a blend of the two, which is obviously hard, we're just way too far down one extreme.
another porkie, you are still in shorts at school