If the game expects and requires you to use the tadpole repeatedly in order to have fulfilling game experience, that's honestly just bad writing in my opinion. Any sane character that genuinely wants to keep a hold of their sense of self, or who just doesn't want to be the kind of person who literally brain-rapes other people into doing what they say (not persuade, not convince, not intimidate, but to forcefully dominate and take their free will away from them)... which, you know, will be the majority of neutral to good aligned people, most of the time... is going to want to resist any impulse or urge from the tadpole. Even darker or more selfish characters may be inclined to avoid its use more often than to abuse it, if self-preservation is their main goal.
Even look at our companions: We have in our stable right now, a classically neutral evil, a classically lawful evil, and a classically chaotic evil (With hints that the neutral, shadow, may be suffering a dissonance with that, and may have different inclinations underneath). Even of those three, ONLY the chaotic evil, Astarion, is game to push the tadpole and utilise its powers... so to be using them, the game is saying that we are at least as red leaning as Astarion.
Most players are not going to be playing that kind of a character most of the time. People will feel driven to use the tadpole out-of-character because 'it's just how you see more of the game' but that's NOT a good reason, and it's not good writing.
the first time I played, I was playing a character that, amongst other things, was not the sort of person who would willingly dominate another person's mind or force their will on them - and certainly wasn't the sort of person who would risk exploding their own skull using an unknown element to do it; SHE doesn't know that it's perfectly safe because of "plot". The game felt kind of bland as a result. That's a major problem.
Incidentally, that character was also disappointed that there was no dialogue option to tell Ormellum that she didn't want to take the ring from him, since it was what kept him and his quest for a better way of living, safe from any elder brain...
To the thread topic, I agree that having the ring should absolutely disable all tadpole prompts and prevent them from appearing at all... it really should, since that's what it's meant to be doing.
