This is not a pool area or hospital room. You do not have a metallic piping system, you have seperate pieces of metal.
If you are going to bond isolated sections of pipe simply because they are metal, don't forget to bond the towel and curtain rods. What about the couplings and connectors for the PE tubing?
If you are going to bond the piping because is near a counter top receptacle, then don't forget to bond the drawer pulls also.
Only if there is good probability that the metallic item will come in contact with an electrical conductor is bonding required. I can not think of a situation that would energize these pipe stubs.
