>it can be run on external hardware that uses a capture card to analyze your video feed and alter your mouse inputs to the computer.

I think at some point defeating this becomes impossible. This sort of cheating isn't much different conceptually from just having someone who's really good at the game play for you.

Valve have been trying by training a neural net that watches every competitive cs:go match played to detect aim bots since 2017 with training data sourced from players labelling demos as cheats or no cheats, but I don't think they've hit a big breakthrough yet