I have great respect for the project, and IMHO you missed the headline feature: Debian’s Free Software Guidelines and the commitment to true freedom in main is

I have great respect for the project, and IMHO you missed the headline feature: Debian’s Free Software Guidelines and the commitment to true freedom in main is an important contribution to the ethos of a universal operating system. And you’re right about Debian Security Advisories. They are an important part of a stable base OS for anything internet facing. (The days of local users attacking each other via vulnerabilities seem less relevant in 2020.)