Yeah it's been going on for a while, and frankly I'm assuming there's probably dozens of things that have been approved for human consumption that simply shouldn't have been.

Be it drugs, food additives, packaging materials or disinfectants, it's clear that regulators are all too happy to be lobbied or pressured into squinting hard enough that a "small risk for negligible benefit" suddenly looks like "safe and effective". Do that repeatedly and the health effects can stack up. It's not death by the thousand cuts, it's death by the thousand carcinogenic coin flips.