origin characters are reclassable for player benefit and gameplay flexibility. redistribution of their stats is the same because their stats are not well balanced for gameplay

you are arguing everything is strictly rp and willfully ignoring what is clearly designed to be gameplay. by your argument, because you can flipflop and make arbitrary choices it's a valid characterization because it's part of the game. an origin who spares the tieflings can choose to slaughter them, so what would cause that development? or if you side with the myconid colony then decide to attack them after doing everything you want, what would the rationality be?

if you want to rp any arbitrary decision and call it "role playing" on dw, go ahead. good luck to you