Hey, I have a ceramic snake in the yard to keep the tigers away and it works
great. Never saw one. ;-)
If it makes people feel better to have a bonding wire in their pipe why
criticize them? While you are at it go ahead and bond all of the metal parts of
the system that may become energized by other voltages. Nobody can call that a
bad idea.
This might be important if you have switchesm actuators and such around the
system.