Microsoftcpuprohky you seem to have a serious misunderstanding of what DNS-over-HTTPS is and what is happening here. This change will not override your own manually configured local DNS servers, it will only matter if a client is configured to use a well-known DNS server that support DoH, for example Cloudflare's 1.1.1.1 or Google's 8.8.8.8. Clients configured to use those or other similar public DNS servers will be automatically upgraded to DoH, those set to private servers or public services not known to support DoH will not be changed.
Also, if you want to run your own DNS server that monitors and/or modifies traffic you can still do so with DoH. It's just a different protocol between the client and the chosen resolver, everything else works the same as it always has.
The only thing this actually affects is transparently intercepting DNS traffic and redirecting it to somewhere the client did not want. Protecting against this is a good thing. Those who legitimately control the machines they're monitoring can configure them appropriately for their needs rather than relying on dirty tricks.
It won't change a thing as far as malware or ads are concerned.
