I do find it odd that we don't have a companion here that's actively encouraging us to go with the Absolute.
Would you really expect some companion to say something like:
"Ok look ... i know that we dont agree with each other allways, i know that one of us is offended by the very existence of litteraly anything else than herself, and i know that another one of us is zealot that sworn to destroy anything that is anyhow tied to Mind Flayers and allready tryed to attack us bcs we have this tadpoles in our heads ... but how about join this odd cult of Absolute, that you all just agreed to wipe out?
They seem to do the right thing."
Yeah, I totally would. They thought that this path was worth encouraging players to follow, and you can still follow it with Lae'zel in the party it seems. Astarion has voiced his desire to learn to control the tadpole while-theoretically-in Lae'zel's presence. And on a meta level, this is a major branch of the story, as far as I can tell, and to have no character advocating for it is really weird. In games like this, you always have at least one character actively in favour of the evil route. Astarion is close, but seems he has at least some degree of disdain for the group, from what I've seen. If they really want to be concerned with story cohesion then just have the character approach you privately in camp or something like that. Larian is not afraid of having companions not like each other, clearly. And it could be a case of making the character who advocates for the Absolute (who doesn't even have to already be a member) and Lae'zel mutually exclusive party members. Despite your cartoonish example, within the logic of the game making this very obvious suggestion work is about as easy as anything else they could implement.
