Fortunately I can relink my lights to a zigbee adapter and remove the hub entirely, but it's significant pointless effort I'd rather not have to do. Thanks Philips or whatever third party subsidiary now makes Hue! I'll now never trust or buy anything from you ever again.

If anyone has a setup like mine (a Hue Hub, but also using HomeAssistant) I would suggest firewalling off the Hue Hub from accessing the internet. While the Hue App will stop working your lights shouldn't... for now.