Maybe. I mean, they probably have picked up a lot of this, one way or another, but I will just throw in the note that I have a 13.5 year old who has pretty much no interest (as far as I can see) in social media or online hangouts like Discord. They're not absurdly sheltered - they have friends at school and circus who know a lot of stuff, and we talk about these things - and they're not tech deprived - they know Google apps far better than I and know the ins and outs of a lot of video chat systems. They just don't have an interest in an online life, and I think it's worth remembering that such kids exist, so assuming that all kids know these things from online sources could lead to gaps.