LannTheStupid
Товарищ
You can. You will role play as a corpse, most likely. Mythic powers are given as the part of quest progression, gathering EXP, level ups and so on. If you "reject" - meaning "fail" such quests you, presumably, be underleveled and die. Or hit a hard stop, so you will have to lower the difficulty (which can be considered as "Give me another Golarion") or drop the game.if you want to roleplay say, a mortal who receives demon powers and tries to reject them
As I wrote before: there is no way to open the Azata path without at least 1 pure Good choice. It is incredibly annoying for me, as I hate such choices, but I want to see maximum content as well. For role play I should have rejected it - and lose one Mythic path right from the start.
If this trend continues - because why not - then a player who does not want to be any Mythic will end up being a no one. And not in the Braavosi sense "no one".
Also, I do not see motivation for a true neutral to even go to the Worldwound. I see the motivation to perfect himself and be as good "you" as you can be without any external confrontation. Because why? Except for druids, for sure, but druids have obligations; a true neutral character does not have to have anything.