To each their own, but the ability to pool from any creature level is what makes PF2e so great. A high level party can absolutely obliterate a single goblin, but a small army of goblins will still remain a challenge. And dice rolls are significantly diluted so encounter balance is significantly easier for a DM. Takes me 5-10 minutes to choose the enemies and I know that the encounter difficulty will be as expected. In DnD the dice rolls can change an easy fight into a deadly and a deadly into an easy.