Bruce,
many years ago (when there were still some racers at NHRA) Carl Olson would send me the draft copy of the new rule book and I would proof read it and weed out things like the stop collar on a front motor car. At one point the rules for the advanced e.t. motorcycles filled a page and a half and some of the stuff was totally bogus and unenforceable. By the time I got done with it it was down to the current single paragraph.
Once Carl left, followed by Jim Skelly, I was out of the loop and they go blithely on their way with the sort of thing that you pointed out. You are totally correct about the 'appease the insurance company" situation which is the main reason for the 20 lb fire bottle rule in blown front motor cars. And even though several drivers of big show T/F cars have been scorched by fires there is still no fire bottle requirement except in the case of an enclosed cockpit and then the minimum size is only 5 lbs.
Roo