What the author of this article was saying in the statement above is that if all metal pipes have the same touch potential then current if present would cause no harm.
What the author is not saying is to install a equi-potential bond to protect the gas pipes.
In the next paragraph the author points out;
This is accomplished with the equipment grounding conductor but will make the CSST pipe conduct current in the event of a lightning strike as the current can travel across the gas pipe looking for the EGC of the equipment and the ground rod to which the EGC is attached at the main.
And goes on to say that;
This now makes the conductor a “bonding” conductor to establish a path in the event of a lightning strike.
We also have the problem when there is no electrical equipment installed that has an EGC such as gas logs and water heaters. Now there is nothing at all between the gas line and earth and all kinds of arching will be taking place as the current imposed by lightning is searching for some place to go.
Let me again point out that to call this conductor an equipotential bonding jumper would be using the term “equipotential” out of text and could lead the electrician called in for an evaluation to totally disregard the entire report.