Those pictures look familiar.
I don't recall saying this damage made the gun unshootable but cylinders that rattle back and forth and have large barrel gaps don't give most people warm fuzzy feelings.
If folks want a picture of a really screwed up condition that can happen with brass framed guns they will need to see one with the cylinder arbor (or pin) loose.
Of course it will look just like a picture of a gun with a tight cylinder arbor but my point is that this can happen.
This part is just screwed into the frame and brass threads, being what they are (weak) can cause them to fail.
If this happens, the cylinder arbor and the barrel (and wedge) can be blown off of the front of the gun.
While this might not damage the shooter, once it happens the gun will then be unshootable.
IMO, if common sense is used so the brass framed guns are loaded with mild powder loads they can be shot thousands of times without wearing out.
Someone loading the chambers with a hot powder like T7 and a heavy slug can expect their brass framed gun to be damaged. It's as simple as that.