Water probably isn’t required because less new people will sign up if the barriers to entry are higher. Also, at an advanced pace, even if you don’t go down, when something breaks and you spill coolant, it is going to be a lot more consequential for you and the people behind you.
In my opinion, anyone with more than a few days track experience, regardless of group, that just wants to do the minimum required to get on track, should find a new hobby. If someone has done a few days, he probably know why antifreeze is an issue or why people safety wire drain plugs and filters. If he is still running antifreeze and not safety wiring because it is less work for him, that is not the kind of person I want to be on the track with.