Would we like it fixed? Yes.
It's not a high priority at this moment, but I've added a comment to the GitHub issue to see what's happening there.
If you're interested in this, it may be a reasonably straightforward fix and if so, we'd be happy to help get it merged.
@eertree you can try the workaround here: https://github.com/swagger-api/swagger-codegen/issues/10440#issuecomment-982582683
Or you can search/replace the text of `import java.sql.Timestamp` with the Model you want.