I really feel like it's dishonest for players to argue about this. The one to decide is the dm. Trying to bully the dm into a position where the player is guaranteed anything when the class purposefully places you in the hands of the dm is not cool imo.

Like, ok guys, you want to play a tactical wargame and you don't care about any lore or world building and the dm is your opponent. But why do you play a warlock, a paladin or a cleric if you want to be an ass about it?