Incorrect Exp Scaling per RAW?

[Vaizt]

https://2e.aonprd.com/Rules.aspx?ID=500
Exp is meant to be awarded in steps, not divided in the way the site appears to do so? The GM is granted extra exp to use for building an encounter when more players are present, but the total exp granted is not reduced or increased. While I'm not opposed to using this, it's not the way the system is intended. And the calculations being done to find the exp value being exposed would be nice.