Wow, lots of mis-information here. There are no "gaskets on the CSST connectors that prevent the continuity of the bonding of the gas line".
The gasket is in the connection to the gas meter, where a dielectric union is. Most gas piping that's made out of black iron pipe isn't technically grounded, except for places where it might be in contact with the building structure (or, as has been mentioned the equipment ground, but I guess this isn't good enough for CSST).
The lack of gas piping ground didn't used to be much of a problem, since black iron pipe is thick and strong enough to withstand a little voltage spike caused by lightning, so the code has left it alone.
CSST in comparison, is thin and weak. If lightning hits a CSST piping system and causes an arc to jump from the CSST to a nearby ground source, it will burn a hole right through the CSST. That's why a better source to ground is important with this stuff.
My understanding is that the code was changed a few years ago that pertains to this. It used to be that the 6 guage bonding jumper needed to go from the CSST fitting or steel gas pipe directly to a ground rod or a ground lug inside of the breaker panel. This has recently been changed to allow metal water piping or building structure to take the place of that. Also, as has been mentioned, there is a type of CSST available that is supposedly made better so that it doesn't require the bonding jumper. This kind is usually black instead of yellow. As always, check with your AHJ with any questions.
There really isn't anything special about the clamps. They look like this and if you go to a Home Depot-like place they can be found in either the plumbing section near the CSST stuff, or in the electrical section. The generic ones in the electrical section are usually cheaper than the ones in the plumbing section, but for all intents and purposes they are the same thing.