[delusional]

There's a difference between "theory proven wrong" and "proof being wrong". A finding that Theory A is wrong is still a valid finding. A wrong finding about Theory A is just a lie, it carries no value, and should thus be retracted.

[mjn]

In practice, wrong findings that aren't due to misconduct and aren't very recent are usually not retracted though. It's just considered part of the history of science that some old papers have proofs or results now known to be false. It is pretty common in mathematics, for example, for people to discover (and publish) errors they found in old proofs, without the journal going back and retracting the old proof. A famous example is Hilbert's (incorrect) sketch of a proof for the continuum hypothesis [1].

[1] https://mathoverflow.net/questions/272028/hilberts-alleged-p...