It should be noted that none of this article applies to actual development that goes on in the Debian distribution from https://www.debian.org
Official Debian development, being FOSS oriented, proceeds from Debian source packages instead, and one never creates a binary package from scratch as described in the article. Instead, we use `dpkg-buildpackage` and other similar tools. The creation of the source package is the hard part, having to follow all the aspects of Debian policy, including technical matters around quality.