I did not feel safer with the law on the books and don't feel unsafe b/c they are dropping the requirement.
For all the topics you read on SB, I don't recall many threads having to do w/ "bad" air/gas here in FL - sure it can happen but this is not something likely to keep me awake at night.
Poison a few folks and you put yourself out of business - not worth it for a service many shops claim as a "loss leader".
Or after the ME determines death you can sue him for a zillion bazillion dollars for slandering your crappy air fills...