Let me explain based on my experience in zozo, sometimes a person might not interest to reply (there can be many reasons in many situations, may be to some questions and not to all) to the person.What will be the issue ? If this concept implement.
Whether this feature is there or not if someone don’t want to reply they will not and if they want to they will.
Some people might annoy asking why you didn’t reply even after seen. Some people might take decisions like negativity mind set etc. It might cause unwanted disturbance and convos which is not need i feel