NGL I’m not very familiar with the technical details, but I know quartz is pretty temperature sensitive and starts to get damaged about 400F iirc
It’s possible special conditions are needed to really succeed, like low/no oxygen or a long duration at a lower temperature.
But theoretically, the answer to your question is “yes”
You’re almost certainly correct, but fascism doesn’t follow logic. It’s merely seeks power. Even if giving up the tiniest bit of power would be a better strategy, fascism will eventually try to grab that power back.