Take your own advice for a change. Even assuming we all agree that no one has the right to demand that another abandon their position, the reasonableness of applying restrictions by default is no less your *merely subjective opinion* than rjdymond's assessment that some licenses are more reasonably adhered to than others.
Personally, I think the entire discussion is pointless. Enforcing copyright claims through coercion is both immoral (IMHO, though that classification is far from arbitrary) and ineffectual, and claiming copyright sans coercion is simply ineffectual. Better to just accept reality and move on.