The pipe dope or tape is just a lubricant. That joint, made up gas tight, will have plenty of metal to metal contact.
250.104(B) seems to make bonding necessary if there is any electrical connections to gas fired equipment and inspectors might just say all pipes "may become energized".
Usually that will happen with the EGC of the equipment using line voltage so I never got to worried about it.
An example would be a furnace. The burner is screwed to the case which is bonded to the blower motor EGC and threaded to the gas pipe.
