I largely agree, but less so with the empty chamber/hammerless points. Anything modern is going to have a transfer bar blocking the firing pin from reaching the primer without a full trigger depress. For the hammerless, I don't know if you could drop that thing in any way from any height where the internal hammer would get enough inertia to overpower that trigger spring. Anything to do that would advance it to the next chamber anyway and come back on a loaded one.

Even so, having people be extra cautious is better the extra careless. You should always do not just what is safe, but also whatever you are comfortable doing after understanding your own personality.