In reality 1% of 3 million kids clicking on 'Free vbux!!' and converting is 30,000 kids having malware ridden phones, doing god knows what to god knows who.
Well, most of those kids will run outdated Android versions with many known vulnerabilities. And they cannot update their phones, because they have locked firmware and walled-garden OS, largely put in place to make them buy new phones.
Again, the proper solution beyond a good security baseline is to educate people.