I have a question. The story goes your tadpole is altered somehow and this is why you retain control of yourself. The true souls' tadpoles are not altered and are used to control them. If you take their tadpoles and shove them in your brain, how are you still not mind controlled?
There's been zero talk about how you actually get rid of the tadpole if you are playing a sane PC. But there are now skill trees for putting even more tadpoles in your brain to get a "more fun late game". (I really don't want any more fun by Larian in my D&D game.)
Is this gameplay ignoring and undermining narrative again?
🧐. I think we learned that it's impossible to safely remove them from sources with enough expertise. A certain independent mind flayer was able to help us, though. As does the artefact which is warding off the absolute. Unless any of that information was false, it seems a cure is impossible, but symptoms can be surpressed.
As for the other tadpoles, ours might have some virus like effect? There's magic in it, and although counterintuitive, it might either spread itself thin... or find additional hosts and replicate there.