Originally Posted By Spaceman Spiff

Not everyone wants a 10,000 rpm engine.

You missed (or ignored) the point.

David K. said the only reason for a shorter deck height was improving header clearance. The linked article outlined how NHRA Pro Stock engine programs found numerous performance benefits associated with shorter deck heights.

Simply because those improvements might be comparably insignificant for engines making below what a modern Pro Stock makes doesn't mean it's not a better approach when you can apply it.