On the contrary, because it's tcp and encrypted you can tunel your queries safely over tor. Of course, there are some things to take care of even if you do tha

On the contrary, because it's tcp and encrypted you can tunel your queries safely over tor. Of course, there are some things to take care of even if you do that, because privacy is not a simple binary switch you enable. If you own some not so popular domains, you also should make sure to exclude them from the queries, so that who you are not easily deanonimized by your query patterns. Both is easy relatively easy to do with dnscrypt-proxy. It's not enough by itself, but DoH enables ways to get secure DNS queries to your chosen provider anonmously and securely.