I was surprised to see that this answer had both a down vote and a delete vote within an hour or so of it being posted. While I could be wrong, it seems likely a that 4k+ user read the answer, disliked it, down voted it and voted to delete it. I understand that 4k+ users have that privilege, but should we be using it that way? I understand that users can use their privileges however they like, but I would like to understand the consensus of the community.
I think your assumption is not helpful - we have no way to tell whether this was one user or two. An hour is not a rapid response when folks are up, so rather than try and second-guess voters, let's focus on what it means.
Nothing, basically - this would require others to also vote to delete.
That said, I agree it isn't delete-worthy. I have downvoted it as it was not a good answer, but it does at least appear to try and answer the question.