Quite happy to be proven wrong by some of your homework.
It isn’t important enough to me to want to prove you wrong 🙂
I’ve had this conversation with my GP and it’s generally accepted that everything in excess is potentially bad for you, whether it’s, sugar, water, vitamins, carrots, whatever. Sometimes in ways that are known and sometimes in ways which have yet to be fully understood. But if you reject this approach then fine – it’s your prerogative.
EDIT : I use whey protein shakes after exercise myself. And last week I bought a box of Promax protein bars in Costco to take on long rides as they seemed good value. So yeah, I use whey protein as a supplement.