If the only message non-Christians get is that God is all-loving and all-forgiving then they are unlikely to see the urgency of turning to Him. Instead they may think along the following lines:
"Christians tell me God loves me unconditionally, so therefore I need do nothing to earn His love and care, and whatever I do wrong will be forgiven anyway, so perhaps one day I might consider God and Christianity more carefully, but there seems no need to worry about that right now".
And this is perhaps an optimistic view I am taking. Most likely they will not consider thinking of God at all. Emphasing only God's saving love leaves out the other side of the picture: the ultimate destruction of oneself that is inevitable for those who do not turn to Him - and according to Ravi Zacharias it is SELF destruction, not God's destruction. Only God can save us from our own sinful nature. The longer we are separated from God the more danger we are in.
Ray Comfort asks whether someone could stand by and watch while another person was about to be hit by a truck - who could do nothing but watch such a scenario and claim to be acting out of love? He asks then how much more uncaring is it to believe there is a hell and yet not warn anyone about it? Do you really think that someone who finds themselves in hell will not cry: "You knew this horrible thing was true - yet you never warned me? What sort of Christian are you?".
Given this I fully support people like Israel Folau who texted a warning to his twitter followers - it was a tiny counter message to the mainstream one that nothing matters but pleasure and what YOU think is right. Because there is so little opposition to this materialist man-as-God perspective it is even more important that prominent people make such statements - they are the only ones who are likely to have any impact and penetrate the media's boiler-plate which stands against the Christian view. Even if the media attention is only a massive cry denouncing him, it is certainly worth it. Clearly there are those who are scared of his message - if he had tweeted "God loves you" it would have gotten no attention - and the few that heard it would have likely gone on their way, thinking "of course he loves me, how could he not?" - unaware of the horrors that await them if they continue on this path too long.