From my own experience of my product that is used by teenagers, they are well aware of the risks. In chat, they will not give their email, name, place or even reveal what timezone they are at. Most boys will say they are boys, but girls will not even mention that (it's a gaming related product). It seems they are well educated on this topic, and are very cautious.
I agree, but I think it's one of those ratio things - MOST kids are well educated on the subject, but you know there's going to be a nontrivial amount that isn't, or who despite the education still fall for it (case in point: my GF's son was scammed by a guy in Fortnite who befriended him over the span of over two weeks, an eternity in a child's mind. It was just some stuff he earned playing the game of course but still, his trust in people took a big hit there).
Anyway point is, it only takes one case for the media to pounce on e.g. Roblox and drive it into the ground. And there will be a lot.