Thanks for your feedback. We try to avoid tight integration with specific, third-party providers as much as possible to keep Caddy light and flexible. Cloudflare is popular, but is also not a majority use case for Caddy users, in our experience. The Cloudflare plugin has only 16,000 downloads (and Route53 has 10,000)... out of over a million custom builds (not to mention 100M+ Docker pulls, or other ways of installing Caddy). So it's not enough of a standout to merit inclusion by default.