No, not by any logic.
First off I don't like Alum bats. IMO they've ruined leagues where they are allowed as they give an advantage to the batter (info from link on thread) and result in higher 'bogus' batting averages. That being said, the fact is that Alum bats have been tested and deemed safe for use in those leagues and the extra power is minimal (again, from the link), especially at Little League level .
Now at MLB level its a totally different animal and that's why they can't and never will be used. A slugger like Jim Thome of the White Sox would KILL players with an Alum bat (as it is the infielders play on the outfield grass when he bats).
The bottom line is it gets back to this kid and his parents. Even if a wood Ash bat was used would the results have been the same, nobody knows. It was a freak accident. But since these parents are intent on suing I'd definitely bring his training into account. Did good ole dad ever teach the kid to play defense, to 'defend his position'. The basics of Baseball haven't changed since I played eons ago, and 'defense' was taught to all Pitchers, first by their father then a coach when they joined a team. Excuse me, 'made' a team (yep, we had 'standards', not everyone got to play on a team)
Unfortunately, coaches and parents and often league officials don’t think before putting some kids on the mound. We played games last year where we would let inexperienced players pitch. We wouldn’t do this against just any team but against teams that didn’t have power hitters. But the other team would do the same thing, and their inexperienced pitchers were clueless about many defensive aspects of the game. We had five 12-year-old power hitters going against tiny 9-year-olds. Thankfully, none of our boys hit back at the pitcher. They were more interested in getting the ball over the fence. But we did have kids who were trained by adults to hit line drives back at pitchers. I hadn’t thought about the ethics of such. I do know that if a parent yells for a kid to hit a line drive that the opposing pitcher gets real nervous.
There was one game last year when one of our batters hit a shot at the second baseman. He was 9. He should not have been playing with 12-year-olds. It knocked the boy out. But his dad thought he was the greatest player on the planet and would not put the boy in the outfield or the bench.