From gbhackers.com
Firefox Starts rolling out the DNS over HTTPS by default for U.S users to bring fully encrypted browsing experience, and the rollout continues over the next few weeks.
The processing of rolling out takes a little longer time to ensure that no major issues are discovered as this new protocol when users experience this feature in Firefox.
Current DNS systems are leaving billion of users vulnerable since the internet is not encrypted, and it allows ISP’s and law enforcement agencies to spy your browsing activities due to unencrypted DNS queries.