Slop.

These arguments exist because the problem is capitalism, but there's a whole ecosystem of nonsense designed to trap people into blaming literally anything else other than the actual root cause of the problem. Most anti-modern food system arguments aren't arguing against the "capitalism" and "profit motive" parts, they're just screaming into a megaphone that they slept through all their high school science classes. It's pure ignorance, and thus I think "No investigation, no right to speak" should apply here.

There is plenty to say about food additives for sure. You raised a lot of solid points yourself, but a CHUD isn't bringing up any of those points. They're far more likely to insist that some vague insidious "chemicals" are added to their food by their scapegoat of the week. There's no discussion to be had with someone who doesn't even have the most basic understanding of the issue and is just flailing around in the dark.