Well, I guess it's ambitious to lock a lot of content behind a mechanic that only makes sense as a hammy 70's body horror fetish and/or fantasy version of 50 shades of gray. It's not like moving Daisy from your hearts desire to the status of a Guardian, does anything to alter or hide the only narrative reason given in chapter 1 to go down the brainworm farmer path is to get terminally screwed, body, mind and soul. Even if this plotline is partly intended to work as joking social commentary or whatever, it's not a good design choice from Larian to dedicate whole branching plotline behind enganging with fetish content.
I'd say the better games in the genre(Resident evil village, System shock etc.) that fetishize body horror, tend to leave it mostly up to the player whether or not they want to engage with this stuff or not, and leave enough room for the players to treat the story as just a horror story. In BG3 it's like we're sort of stuck with a GM that's trying to coerce the players to engage with his/her fetish.
This is just a weird take and very inaccurate. If you don't want to use the tadpoles just don't click the tiny brain symbol of the UI that is at the top right...very out of the way, barely takes any screen space at all, and so small you might miss it if you weren't actively looking for it. It's easier to miss than to notice. And if you do inserting tadpoles gives a graphic representation of your brain being eaten and/or rotting away...it's basically screaming "don't do this!". And then the guardian figure who is obviously sus and from everything she says comes across like she has a large warning sign stapled to her forehead that screams: "Do not trust a single word I say!" lol. If anything the guardian is Larian(or the DM if you will) literally warning you not to engage with the tadpole. And if that wasn't enough if you decide to trust the guardian and use the tadpole in conversation the narrator literally tells you that it took something you will never get back. All of this is the literal opposite of the "DM begging" you to engage with the content. The DM is offering you the option to do that stuff but offers about a hundred million warning signs if start following down that path and if you don't go down that path it's completely out of the way where you don't have to see it and all you're left with is a few conversations with the guardian that mostly serve a warning signs but those are few and relatively far between.
