Howdy!
I can't recall the last time I bought a gun at a gun shop. (Pickings are very slim here for what I want.) If I could find one I wished to handle, I would ask permission to do so and ask them if they would allow me to work the action (if I was interested enough in it). As I said above, I don't spin someone else's sixgun cylinder, not even there.
Don't have any idea what that video shows; haven't seen it, but like my 'cousin' says above, I'm not talking about a zillion RPMs, and don't believe the original poster was, either.
When I'm at a match, or out practicing, I don't handle other's sixguns. (In a match, if I'm at the unloading table, I let the shooter spin their own cylinders to show me their guns are unloaded.)
Guess we will just have to agree to disagree about the 'undue wear'...