People are freaked out by chemicals. We picture slimey billionaires, scheming behind a desk, counting their vast sums of money that have been made by poisoning innocent people with their chemical laden products. I understand your concern. There are enough class action lawsuits pending out there to make anyone leary of the word “chemical”.
However, not all chemicals are necessarily bad, just as not everything labeled “all natural” is good - arsenic comes to mind - it’s naturally occurring in the world, but would you eat it?