Let's just pretend this isn't a revolutionary change to the nation's leading sport while we also pretend revolutionary changes are typically fully adopted by everyone without question. Your "argument" is willfully ignorant of human behavior in general, you know damn well the risk associated with youth football resulting in traumatic brain injury is, fortunately, statistically zero, but sure, let's all pretend that fact isn't real. You also know your attempt to associate "pro lifers" with parents who might oppose such a rule is a pure red herring, a logical fallacy, and rather juvenile in my opinion. For the record, I support limiting tackle football by age and I'm pro-choice, but that shouldn't matter because arguments made that are ignorant of objective and factual premises don't concern bias, something you appear to have an issue with.