“may be satisfied eating or serving to your children generic “food” without inquiring where it came from or what’s in it, but many others would prefer to know.”
What stops you from knowing?
Nothing. Buy products you know and trust. There are multiple stores that sell organic or food you would be happy with.
There is no need to make even more laws and regulations and government bureaucracy.
Government has three basic legitimate roles: Mutual defense, establishing and maintaining sound currency, and enforcing the rule of law. Under the latter, protection against fraud is the key area of commerce that's applicable here. There's a reason why the USDA inspects meat packing plants or why health departments require restaurants to maintain sanitary procedures, and it isn't because "big brother" wants to meddle in your freedoms.
We tried an "anything goes" system in the early history of this country, and while that works in small communities where everyone knows each other and you either grow your own food and make your own clothing or buy them from a neighbor, as societies grow larger and more complex the "scaling problems" require some level of oversight by an independent third party chartered to serve the public interest and with the force of law behind it. This is why by the end of the 19th century there was a public outcry against the then-prevalent rampant abuses which led to the establishment of things like the USDA and FDA in the early 20th century.
Every society goes through these stages. A replay of this history has been going on in China for the past few decades as rampant pollution and poisonous products is producing near revolt on the part of an increasingly large portion of the populace.
If you admit that government has a legitimate role to play in public health and safety, then its a question of how to achieve that. Accurate and mandatory product labeling is part of that system of assurance and is one of those "checks and balances" things that the framers were so fond of. It's not enough for someone to claim that their products are "safe", you'd like some independent assurance of that. And while the FDA may say product X is OK, it's a check-and-balance to require the label to say where the product came from and what's actually in that product so that the end consumer can, if they wish, apply their own judgement.
Look at it this way. If you or a family member were allergic to peanuts or some other food and industry lobbyists spent millions to ensure that there was no easy or practical way for you to discover whether or not the food you buy contains that ingredient would you be happy?
Companies know full well who their suppliers are and what they put into their products. Labels simply make that transparent to the end user. Transparency is a hallmark of a free an open society. It is a perversion of the language to pretend that everything should fall under trade secrecy protections and that caveat emptor is the only rule we need.