Shane, I have seen new CSST installations here that have bonding applied to ALL metal compenents in the attic.
Every b-vent, CSST gas line, etc., some with insulated, stranded smaller guage (10-12) wire and some with #6 or 8 solid copper. I have never seen this (yet) for homes without CSST. Most builders I have seen recently are using ridgid iron pipe... this may NOT be a trend, since there are lots of builders here and I have not inspected all brands recently.

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Jim Luttrall
Mr. Inspector.net, Inc.
Allen, Texas 75002