That's a fair point, but doesn't change the fact that it remained there after the code review that was surely(?) made after implementing blast door. Especially for image parsing APIs, considering they've always been the brittle part in the iMessage pipeline.

Not sure how Apple dev machines look like, but usually I can find stuff like this with a well written grep or a shell script and my API definition, if I'm not sure that I caught everything while refactoring. The codebase might be massive but the team should be sizeable enough to handle it.