True, but it's not just the version control that's the important part. It's the infrastructure around it. Today, when you submit e.g. a homebrew PR, it gets c

True, but it's not just the version control that's the important part. It's the infrastructure around it. Today, when you submit e.g. a homebrew PR, it gets comprehensively tested by CI builds, including rebuilding and testing all reverse dependencies on every supported platform version. The BSD ports changes are backed by poudriere builds of the entire collection, again on multiple versions. Services like GitHub and GitLab allow one to hook in all sorts of stuff and greatly improve the ease of submission of large- and small-scale changes, as well as making thorough testing and review both possible and accessible. Older projects are stuck with older entrenched tools and infrastructure, and haven't taken advantage to newer ways of doing things which newer projects have been able to adopt wholesale. The Debian tooling and infrastructure is certainly dated, but it's also of extremely high quality and very robust.