Originally Posted by Drath Malorn
Reasons to have any interest in the Absolute.

My characters have heard of no reason why they could want to join the cult of the Absolute, either genuinely or as a self-serving characters planning to use the cult.

We can somewhat gather that there's a link between the Absolute and our tadpoles. We seem to be True Souls pawns-to-be who failed to be properly created, because of the Githyanki attack. The Absolute then sent Edowin to destroy the botched puppets (or weapons) that we now are.

So, at the moment, I don't see why the characters could want to get any more involved with the Absolute, on their own initiative.

Note : as a player, I can think of reasons. The characters could want to go kick the Absolute' ass and force Her to remove the tadpoles or explain how to control them. But the characters don't seem to voice anything like that. I believe that, as a player, I'm not supposed to try to rationalise what happens in the world or make up explanations to fill gaps.

In my last playthrough, this plot hole was somewhat addressed with a (easy to miss) conversation with Volo. Turns out if you side with the goblins while Volo is at your camp, at the goblin celebration he starts querying you about why you chose to betray the tieflings. You get various options to justify your actions and Volo has some interesting responses to all of them.

The only other time where the question is addressed that I found is when Zevlor realizes your treachery, one of your dialogue options is something to the effect of "I'm sorry, joining the Absolute is my only chance to find the cure to my sickness", but you get no more details than this.

So I agree, it's a pretty glaring weak point in an otherwise solid game plot.