I looked over my firewall logs to see what I could find and at this point the logs only show three types of devices hitting google dns.
HA controller hits 1.1.1.1
LG sound bar hits 8.8.8.8
Foscam cameras hits 8.8.8.8
I feel like there were other devices. It’s possible the other devices only go to google at boot or if my local DNS isn’t responding.
Am surprised they fail if they can’t access Google’s DNS. If unavailable, would have expected them to resolve using the provided ones via DHCP. Anyhow…best not go off the WTH topic on hand. 
Lol you’re already waaaay off that. You’re looking at your individual devices now because HA is operating as expected per your own post above
Technically we’re not talking about HA anymore, rather how most wifi IoT devices are crap because they phone home. 