When the hammer is on the "safety" notch the bolt rests on the surface of the cylinder, in between the cylinder notches that hold it in place when the chambers are in battery. The cylinder is free to rotate save for the resistance of the hammer in the "safety" notch. Any disturbance which results in hammer displacement would allow the cylinder to rotate into battery and a loaded, charged and capped chamber to come under the hammer, which, not being in half cock, is free to fall.
If, on the other hand, the hammer is on an empty chamber, the bolt is in a cylinder notch, not resting on the cylinder surface. The cylinder is prevented from rotating by two impediments: the bolt and the hammer. In the event the hammer is displaced the cylinder cannot rotate into battery without the hammer going completely to half cock, unlike the situation where the bolt is between cylinder notches.
Clearly the situation where the hammer is resting on an empty cylinder is safer than where it is on a "safety" notch. Whether either or both are "safe enough" depends on the likelihood of displacing the hammer; in the one case, just enough to clear the "safety" notch, and in the other case to go nearly to half cock.
Ridiculous? Well, we are each entitled to our opinion. If you don't mind, I'll opt for the measure that provides, in my opinion, just a little more safety. And if that means that you think I'm being 'rediculous', well, I'll try to live with that.