Sorry, I don't mean that the actual system is centralized, as in everybody pings back to the same server or organization, but that it shares a similar vulnerabi

Sorry, I don't mean that the actual system is centralized, as in everybody pings back to the same server or organization, but that it shares a similar vulnerability with having the same codebase running in local hardware. And this isn't even solved by having standard protocols, open source implementations as you mentioned -- only mitigated. OpenSSL was exploited too.