Also, I disagree that denying the lookup of certain domain names is abusing DNS. If I were running a DNS server that was being used by the public, or that was being used by downstream DNS servers, that would be different.
Also, I'm not aware of a method that can accomplish the sort of coverage that blocking DNS lookups can. If you have an alternative, I'd be genuinely interested in hearing about it.
Agreed with you there, I'm not saying that multilayered security is a bad thing.
What I'm saying is that right now, in terms of easy and accessible DNS privacy, we have 0 layers. Don't you think it might be worth sacrificing this one partial, incomplete access control solution in favour of solving that?
Without cooperation of the device, that is indistinguishable from that of a bad actor.
You can get what you want by owning the device and requiring it to cooperate (ie with controlled software or a certificate to allow monitoring / blocking).
