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The fun thing about regressions: these things affects you if your system is new enough that it has the behaviour reintroduced. Which means you are less likely to be hit if you are using Debian Stable (or even Oldstable) than, say, Sid (unpatched at the time of writing this comment) or Arch btw.
Then they have the right to not continue publishing their stuff. That doesn’t affect the rights of the persons who already got their copy alongside the associated rights to consume it. Depending on the licensing terms, it might not even affect their granted right to redistribute, if any.