No, the misleading statement is the one that stretches the boundaries of reason. If it were common for people to ask "Can I send dirty 5 watt power to a 500 watt sub 24 hours a day?" then I would concede. But that's not what we're discussing. We're discussing real world scenarios with real amplifiers and real speakers.
If OP was wondering if a 5 watt square wave would destroy a 500 watt inductor, I would think he'd have posed that question on a physics or electronics forum and not a car audio forum. ;-)