There are lots of items in foods that are not declared on the label as legally it is not required; that is not the fault of the manufacturers per se but the legislation.
Nothing in life is risk free.
The dog food project site is American and lots of its “claims” have no substance in fact particu1rly in relation to some of the ingredients they appear to consider dangerous!
There will be side effects to EVERYTHING in some cases and there are contra indications for EVERYTHING as EVERYTHING in excess is toxic, including water.
So I am afraid the menadione one would come right down the list of hazards if I was eliminating them;