I see, so your logical conclusion is to not even try saving Halsin, who at the very least could provide you with information about the tadpoles, regardless of if he can acutally heal you or not. Honestly, I've argued about his very topic in length in a different thread, and I'm sick of discussing this. If you think the game gives you any meaningul incentives to side with the goblins other than blind power, you're entitled to your opinion.
Saving Halsin involves killing cult members including True Souls. If you plan on infiltrating the cult full of mind-reading True Souls (and who knows what else) maybe starting your undercover operation by killing their prized lieutenants is a bad idea? Considering that you can interrogate Halsin's corpse, killing Halsin instead of saving him makes much more sense for an evil protagonist, after all dead people can't lie.
