Why is it possible to put a question to the community anonymously, but not to reply to an existing post in the same way?

We've made it possible to put a question to the community anonymously in case a member wants to make an inquiry that might betray a flaw or weakness in the financial institution for which they work, but with which they very much require help. It's not possible to respond anonymously because we've judged that would detract from the value of the answer provided.