I disagree, replay files on something like starcraft work great for training. In fact, Starcraft2 was targeted after Go for AI gaming benchmarks, and it's replay functionality is probably a reason why.
But yes, to set it up as a separate machine that is sending nothing but the same user inputs as a person to a computer running the game both completely bypasses and invalidates any of the anti-cheat malware that gets installed, and becomes more and more undetectable to server side code.
not to mention modern games are some of the most complex things humans interact with at all. Driving a car is a joke in comparison
insert <well that was a fucking lie>.gif
Looking it up, the most advanced game-learning AI is currently MuZero and it’s been learning old Atari games.
yes, that people do for fun, as hobbies. With great success. And they are at the point where they have their own leaderboards and benchmark games. The ethics of it are the biggest reason why it hasn't been applied to competitive games.