click-to-play won't protect against trojan smut!
But I'm guessing the unspoken elephant in the room is that some of us might be using our phones / tablets to surf for free tuggables. And there is a veritable Aladdin's cave of dodgy MP4s out there, and anyone who wants to get their thang on is not going to be shielded by a click-to-play protection. Because no play == no funsies.
Icon because, ahem.