If I go play chess against a rando at a park and lose, your above argument makes sense.
If I go play chess against someone who spent 150,000 man years studying how to beat me, to say 'well, it was all up to your mental strength, same as it's always been forever, and you just weren't strong enough' is BS.
Edit: The amount of focused research, science, practice, experience in manipulation humans is unprecedented. Never before have millions to tens of millions of human years been dedicated to things in such a continuous, scientifically approached way. Yet we act as if the world is basically the same as 1980 except we have smart phones/the internet.