DoH is only activated by default in the US and if you use PiHole or similar there is a DNS canary that prevents FF from using DoH. Additionally it shouldn't be

DoH is only activated by default in the US and if you use PiHole or similar there is a DNS canary that prevents FF from using DoH. Additionally it shouldn't be ignoring your /etc/hosts block list as DoH simply replaces DNS not the host list.