>>37475257The Sun dex entry kind of justifies this
>When three Magnemite link together, their brains also become one. They do not become three times more intelligent.Their brains merge together, so a Magneton is no smarter than a Magnemite.
There's a similar thing with Metang
>When two Beldum link together, their psychic power is doubled. Their intelligence, however, remains unchanged. 
