As you can see in your own summary, it doesn't require talking with example.com's provider's awkward API, which was my point. Instead you can subvert that and u

As you can see in your own summary, it doesn't require talking with example.com's provider's awkward API, which was my point. Instead you can subvert that and use a DNS you can easily update or even run DNS temporarily from your ACME client, so implementing many APIs (what lexicon does) is not required.