Disagreeing with or commenting on a ruling in a thought out and sensible manner is perfectly acceptable, and it's really good to see constructive criticism in the suggestions and feedback thread (well, the fact you disagree isn't good, but nobody's perfect). Blatantly refusing to follow a ruling will result in a penalty, unless the ruling is reviewed and altered. Note that the refusal to follow a ruling has no more influence than a polite comment stating that you disagree with it.