Can we allow a non-staffer to reply to its own whispered post?

Suppose there is a product that has a forum where customers can communicate with each other and give their opinions and questions about the product. The forum is overseen by moderators and admins who have to make sure that there are no customers who are posting negative or spam comments or replies. To stop these customers from affecting or misleading other customers, we need to make their comments or replies hidden to the rest of the forum and reply to them in a private way. However, we also want the staff and the original poster to be able to see the reply, so they don’t feel left out or neglected. Therefore, we hide the unwanted comments or replies and send a private reply to the poster within the forum itself, not on a separate chat window. This way, the poster thinks they are still involved in the conversation and being acknowledged.