Because Waspinator wouldn't know true power if it bit him in the aft.

It is true that two minds cannot inhabit the same body. However, my mind is bound to my spark... my soul, if you will... which has been forced into coexistence with Waspinator within his superstructure.

Believe me, you are correct to practice caution. If someone contacted me out of the blue using my name, I would be bothered as well. As a cautious individual, then, I have to ask you, do you like having such a fragile little shell in this world?