Strawman, I never mentioned only those.

Also this product will sooner or later be marketed as legit meat replacement.

But otherwise yes, even those who'd eat it just for protein would be idiots because eg whey comes from a natural food source beforehand which means nature has already done it's thing properly beforehand.

To think that growing stuff in a lab has no unintented consequences is beyond stupid, even if you use it "just for protein".