i think this is moreso the flaw with a hybrid libertarian system where, for some things we can trust the government, but in others, we can't. this is usually pretty obvious but it's incredibly ambiguous when it comes to things we ingest. there's piles of regulations, but few deal with the integrity of the product vs its claims (see homeopathy...).

if we were in the libertarian ideal, we would scoff at the fact that we hadn't chosen a brand vetted by the consumer product testing lab that we're obviously already subscribed to.

and practically directly contradicting you claim is the fact that a private entity is what unveiled this mishap, no government involvement. ,