> Cloudflare is just one of the initial providers and they indicate that they are adding more. Also, I'm assuming you can add your own custom provider based on the screenshot in the article. You can just disable the feature as well.

Or go for https://firejaildns.wordpress.com/ - Linux workstation DoH proxy, more than 60 DoH providers. When you start, the proxy chooses one at random. You can also set the servers in Firefox.