Stupid rule in my hobbie, please help me find the answer

[savageman25]

I just got into racing autograss cars a few months ago (dont worry my rc cars are still with me.......somewhere) and i was reading the rules when i found one that doesnt make sense at all and was wondering if anyone could make heads or tails of it.
The rules state that for someone to race a 'hotrod' autograss car you MUST have a 6 point roll cage, (a roll cage that fixes to the floor in 6 diffrent places) and you must have 'proban' fireproof overalls to race.
Then in the banger racing section (no explanation needed) it says you can have 'any' fireproof overalls, but the thing that gets me is you MUST have a H frame which only is connected in 4 diffrent places, surely it would be better to have a 6 point cage in a banger as they WILL have more accidents than the hot rods will.
And the other thing that bugs me is taht you have to be 16 to race in hot rods but 17 in bangers, its one b****y year and im only 16, i hate being young