There's no reason that Firefox couldn't check for the existence of a local DOH resolver, and if it doesn't see one, pop up a one time message offering to install one for you.
Every operating system has a system wide way of resolving names to IP addresses, and every application uses it. This new architecture of building custom name resolution into individual applications might be easier for them to build, but it's crap.
Every operating system has a system wide way of resolving names to IP addresses, and every application uses it. This new architecture of building custom name resolution into individual applications might be easier for them to build, but it's crap.