Because it’s about communication. If someone uses a reaction to answer your comment with “this is a crux” or “not a crux” it matters a great deal whether the person you are replying is the OP or someone else.
Because it’s about communication. If someone uses a reaction to answer your comment with “this is a crux” or “not a crux” it matters a great deal whether the person you are replying is the OP or someone else.