Baccarat what is the interpretation of Effect of Removal according to drawing rules?

https://wizardofodds.com/games/baccarat/card-counting/

On that page, it showed us a tableau for the Effect of Removal. It's then easy for us to derive which card rank is more important for banco or punto from this effect.

However, no one has explained what is the causation behind the effect. For example, we may interpret that the cause of the significant importance of SIX for banco is the drawing rule for banco when it has a hand value of six, but how could we interpret the cause of the significant importance of FOUR for punto?

I think understanding the underhood mechanism could benefit us better in building our own strategies.