100% this. Coming from someone who made one myself :p if everyone had to do it to cheat, cheating would be OVER at a casual level, and a minor issue at semipros/pros (even irl tourneys can be hacked! see forsaken).
Even if you made a specialized item it would still cost a lot mostly due to the ML requirements. Maybe smartphone + a specialized input device would reduce the 'cost', but you still need to buy a several hundred dollar cell phone.
Besides, I know like 90% of cheaters are 14 year old kids who used the first google result because it's so easy to. Any resistance and that'll stop a majority