I hope to God there's an insurance agent out there right now drafting a policy cancellation letter informing them they will not be honoring any claims they submit for a business they publicly admit they are happy to see burned.

I bet they didn't even call to report the fire or take any kind of action to minimize the damage. So they should be wiped out and completely broke as a result. They wanted to virtue signal? Fine, let it cost them their life's savings to do it.