Peanuts are candy. Just look at a snickers/payday/Mr. Goodbar or 50+ others that add peanuts with say caramel/chocolate/etc. They can be fine as part of a larger dish, but really don't make a heathy snack on their own.
I think you're attempting to redefine a word to fit your narrative, and I'm not having it.
Peanuts are frequently used as part of a wide range of sweets for texture. But, they are also sweet enough to not be out of place and in no way make them heathy by proxy. Similarly, eating a full serving of penuts regularly is generally a bad idea.