If you start a regulation that ensures that all ingredients are listed, then you catch everything, and people with allergies and so on are able to make informed choices.
But you must make sure that the legislation catches everything, no gaps.
That means you cannot simply 'assume' that someone knows that something contains something, no matter how 'obvious' that may seem.
If you catch the blindingly obvious, you will catch the obscure and missable, because your regulation applies to everything - and nothing gets missed.
So I am sure the rule makers will ensure the pointing and laughing, as long as it saves lives - which is the ultimate aim of rules like this.