Blocking Foul Questions

[Kansas Ref]

Why are you 'bellying up' trying to play post defense? Why not just play defense the normal and effective way---arms up extended in your vertical cylinder, and moving laterally with A1?
Reminds me of B1 "playing defense with their face"---when they are lurching forward with their face in direct intrusion of A1's rightful vertical column.

Then they get their get a nasal or orbital fracture as a result of 'encroaching' into A1's vertical space--and to add lemon juice and salt to an open the wound--I as a referee would call a blocking or hitting foul on that injured player.