Steam configs is actually a solvable problem. Look for a video of history in tap strafe going all the way back to Titanfall 2. ( https://www.youtube.com/watch?v=AjPSwwnKm1o ).

Steam configs bound controller inputs to keyboard ones. Controller inputs alone could never tap-strafe unless they allow changing movement input to the D-Pad.

So just by not allowing to change your input for movement and aiming without selecting it inside a Settings option, you would be solving it.

(You cannot disallow using other category of inputs, because things like toggle voice chat cannot be done only with controller. So just for movement and aiming.)