Wow, talk about the law of unintended effects! Without going into the specifics of car seats, I do think we overemphasize safety. The article mentions saving 57 children. How much are 57 lives worth? The answer is not infinite - a life has a numeric value, ask any insurance company. Every safety regulation ought to pass a cold-blooded cost/benefit analysis. Few of them do.
https://journalistsresource.org/economics/value-statistical-...