Why are they 'absolutely' necessary? Can you not play rugby league barefoot or with regular shoes, cleats or any other sort of footwear?
They are absolutely necessary due to the game stipulating they must be worn, and pose a risk to other players not wearing them. In terms of ability to play the game without them, then it can absolutely be played without them.
I suggest you actually go back and look at what was written ECT. Boots are no more a necessity to play the sport, than clothes are. They enhance performance, and are there for good reason, but it's absolutely flawed logic to say it's a requirement to play the sport with boots like you claimed. I couldn't care less whether gloves or boots are any more or less required, you're the one who decided to go down this path of discussion. Both enhance performance, that's the reality of it.
Of course, due to the fact that fields can be poorly maintained, and other people will be wearing boots, so there is a risk of injury. Where have I claimed otherwise? On a professional quality field with consistent surface and no foreign objects, can you or can you not play rugby league with shoes or barefoot?
I suggest you look at my 'maybe we should make players wear gloves for fear of frostbite in siberia' comment, it kind of addresses the logic. I couldn't care less what extreme weather conditions you want to throw down as justification for it. Boots are not 'required' to play the sport, if they were, it would be unplayable without them in all conditions. Now, at no point have I EVER suggested that rugby league be played without them, you've made that assumption all on your own. The same sort of logic you are applying is 'a snow plow must be present at every football field, for fear of a blizzard', even if it's in sydney.
Nowhere have I suggested this. Brush up on your reading skills kid. Just because I'm required to wear a steamer wetsuit to go diving in the arctic, doesn't mean I'm required to wear one to do it in the tropics. Therefore it doesn't mean it's required equipment. In fact it's you who is applying the logic that 'because it's cold somewhere the sport is played, everyone must wear equipment to handle the cold'