It's incredibly easy to prove. You could prove it by setting up clean devices. Plenty of people have attempted to prove it, and gone radio silent after trying.

It's incredibly easy to prove. You could prove it by setting up clean devices. Plenty of people have attempted to prove it, and gone radio silent after trying. There are billions of users, and tens of millions of them are technical, and tens of thousands of them work for these companies. Yet there's 0 evidence of this ever actually happening. Does this not seem strange to you?