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by Citizen8396 303 days ago
I have used encrypted DNS profiles on iOS to block them at the resolver level. However, the correct thing to do is to disable the feature in a configuration profile. You can also block them on macOS using Little Snitch or similar.

No, you sometimes can't use two apps on iOS that attempt to configure DNS and a "VPN" for local filtering purposes at the same time (the latter is often a glorified hosts list).

You absolutely can use encrypted DNS and/or a VPN (or Private Relay). None of these have bearing on using an application firewall or pf on macOS.