This was detected before it reached major distributors. The only major one hit by this was homebrew, but they have never understood security anyway.
Do you have any evidence that other distros wouldn't have done the same? What measures do other distros have in place that would've stopped the inclusion of the backdoor had they not been alerted at the right time?
MacOS doesn't ship with sshd running out of the box, and vanishingly few people ever enable it.
Almost always the so called "community" supporting a OSS project is an employee of a commercial vendor who is only interested as long as he is assigned to the project or task.
The solution is to have a full time owners and maintainers for all the critical projects and the government has to foot the bill. The govt can setup a division to identify such projects.
HN comments: the solution is for government to maintain these critical projects.
Or a not-foreign government…