When a moderator takes action to moderate a question, he or she should not also answer the question. To do so can create a perceived conflict of interest.
This question was recently both moderated and answered by the same person (I believe in good faith.) And if you read the comments on her answer, you will see that already some members of our community are complaining about a perceived bias. This is a refrain that is increasingly common here on meta. Moderators are accused of bias with regularity, this is especially evident when the question being discussed is controversial.
I don't want to drag down this discussion by trying to tackle the topics of gender and sexism or anything relating directly to this particular question or answer. Instead I would like to create consensus around the notion that a moderator should not attempt to answer a question which her/she has or will be moderating. Nor should a moderator attempt to moderate a question which he/she has already answered or will be answering.
Stated more simply, either moderate the question, or answer the question: choose one, but not both.
Do you agree or disagree? Why?