I just reviewed an edit that clearly introduced spam into an old answer. However, the question itself was practically asking for it since it was requesting recommendations based on some subjective criteria. Presumably, this is why the question was closed - because it would attract subjective answers and spam-like recommendations. But why are these posts, question and answers alike, still editable?
Locking the question instead of just closing it seems appropriate as that would prevent edits to the question, but do the answers get locked as well? The locked-questions tag wiki says no. Having to lock the answers separately seems like an unnecessary moderation burden.
Even in the case of just a closed question, where editing is still allowed, I feel that editing should possibly be limited to the owner when in this state to prevent 1 rep users from coming along and spamming over other peoples' posts. Is this an appropriate suggestion?
Finally, for my own edification, I would like to know what is the right course of action for this specific SO question and its answers? Leave it closed and have to continually reject spam edits?
As an aside, I am annoyed with the new user who suggested the edit, but also with the reviewer (fortunately in the minority) who approved the edit. What if anything are the consequences for these users?
UPDATE: The question just got deleted, so that at least provides an unambiguous answer to how to handle that specific question. Also I now understand that the closed state is intended to be fleeting, and this seems like a rare case for which drastic restrictions on all posts are not warranted.