Is that sarcastic? The code in question is Open Source.
Once eyeballs are thinly spread over enough projects, all bugs are deep again.
In what possible reality was this not the inevitable outcome? The "enough eyeballs" aphorism makes for a nice soundbite but in practice was always a red herring.
Clearly sarcasm. With open source, it is not a matter of whether these mistakes (or whatever this one was) happen or not, it is a matter of likelihood of these mistakes being spotted. It's a statistical thing. It's unfortunate this has to be explained.