Initially it seems like an incredibly silly thing to stuff more tadpoles into your head, because oh my gosh, we're gonna die!! Ceremorphosis!!! Run for your lives, illithidization is happening!!!
But after a few long rests of bugger all happening and everybody "in the know" saying "wow, these are special tadpoles, somehow you're not dying", I reckon it becomes somewhat more reasonable to lean into the power of the poles. After all, what is happening seems more like a symbiosis and less like a hostile takeover. And besides, it's not like you can become multiple mindflayers. It's not like three tadpoles can evolve into full mindflayer at the same time. So really, how much more dangerous is it to have three tadpoles than just one?
