Yeah, just because it doesn't directly harm a human in small dosis, doesn't mean it's a good idea to just add it to the daily diet of a human.
We simply don't know, and haven't research the longterm effect of small dosis on a daily intake. Especially combined with other conservatives & chemical additives in small dosis.
You can't deny there are some major diseases in the modern world on a rise and we have no idea why.
Yet here everyone always so sure that everything we're doing with food additives, pesticides and chemical processing is super safe.
There's just no need to eat these things, just eat normal food.