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That's ridiculous. Adding the dependency to libsystemd in no way created any vulnerability. Even the indirect dependency on liblzma didn't add any vulnerability. It took a separate malicious maintainer doing a later change to liblzma so that it ran code when the library was loaded to create the vulnerability.

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I wrote 'was possible' and 'enabled', not 'created'. By paying more attention to what others write you'll avoid superficial dismissals that prevent you from improving your understanding of complex issues.

The creation of this backdoor did not take place in a vacuum. Can you imagine the same person trying to introduce build changes and binary test cases into openssh? This backdoor was crafted in this particular way _specifically_ to exploit the fact that sshd in distributions such as Debian is being indirectly linked with lzma.

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