[xg15]

Does it? If you use regular DNS, how would it identify your requests? (as it cannot rely on the IP address)

For DoH, I guess there are more pitfalls to avoid (http cookies, connection reuse, tls session cookies, etc), but those are all things you can avoid if you configure your client correctly. I don't see how using a centralised provider would automatically compromise your privacy.

(It's playing with fire though, I admit that)