It's amazing that you have such strong opinions about an article you didn't even bother to read.

First, they detect split horizon situations and explain how.

Second, if you as an admin want to force disable DoH across the network, they've provided a DNS-based way to do so.

Third, if this really bothers you, Mozilla provides GPO templates (and JSON based methods for other OSes) to configure all of these settings at an application level.

Maybe focus that outrage energy on reading the article before posting?