I understand the sentiment but I can't bring myself to think valve is to blame or should be doing more. Getting a case of "Yes officer, I have an NO2 bottle in my trunk, but what it is plugged to is not actually the air intake for my car but something entirely unrelated, if you just take 2 hours to dig around and take it apart you'll also realize this"
Thats such a bad example. Ofc you can carry NO2 bottles plugged into something, if its not air intake of your car, and investigation should happen finding you not guilty.
When you're accused of breaking the law, your accuser must prove you have broken the law. If they cannot, there are actions you can take to recoup your damages.
Valve can ban you for any or no reason with no means of recourse or refund.