Could you elaborate on how this would be useful with you and your team?
Sure.
In long chats, or in comments with several replies, it can be helpful to quote text you are replying to, so that the context of what you are saying is not lost.
There can often be several conversations going on in a chat room or in a document's chat or comments, and quoting the text you are replying to helps everyone keep track of why you are saying what you are saying.
Are you afraid of losing a tentative comment?