It's the bozos working with the stuff without proper PPE.

I watched a grave marker carver absolutely bathing in dust with just a thin bandanna, I was in there for 5 minutes and was left choking in their hazardous work environment.

WitH sufficient PPE and dust control, it's not a problem. This is just barking up the wrong tree because they can't get workers to not be idiots, so they pick a scapegoat to ban at random. It's not fucking asbestos. It's apparent but ineffective motion by expediency.