The "merit" of the case seems to be that the bat company did not issue a warning that a ball could come off an aluminum bat faster than a regulation wooden bat.
Yes, that appears to be the merit of the case; however, it is still conjecture on your part to assume this without knowing the relevant facts of the case.
First off, I cannot imagine anybody in this day and age good enough to pitch team hardball that would not already know that. They would also know that the difference is mostly a marginal one - it is not an order of magnitude faster, nor even twice as fast.
Secondly, what if that bat did have a big yellow sticker on it that said "caution, pitchers, you might get hit by a ball"? Would that have changed things? Really? The kid was going to say in front of his coach and team - sorry, but I am scared to pitch to the kid with an aluminum bat?
Why didn't they sue the league or the team organization for not banning aluminum bats? Simple - and we all know the answer to this: The baseball bat company had the bigger liability policy.
It reminds me of the people who want to sue handgun manufacturers because of an accidental shooting, cigarette companies because aunt Sophie got lung cancer, or all those lawsuits in the late 70s over the Porsche 930 Turbo when inexperienced drivers stomped down on them in the rain and lost it in the big way.
There is a definate liberal tendency to blame someone else (someone percieved to be richer than you are) for all that goes wrong in life. Sometimes, sh*t just happens.
More conjecture on your part that the parents are liberal, stupid, and possibly not well off financially. Your fear of liberals amuses me.