This is good. I am surprised it wasn't done sooner. I think all products should have appropriate warning labels.
It is difficult to see how this could improve Instagram and WhatsApp's image though.
Generally speaking, it seems like the majority of the people are talk to only have bad things to say about Facebook (the product), and positive things to say about Facebook's (the company) other products such as Instagram and WhatsApp. Seems like they would want to keep these brands are separated as possible.
Maybe he is not talking about users but about investors ?