It's more akin to the fact that I'm woefully unaware of most new pop music coming out these days as well as many TV shows/films/video channels that cater to a younger audience. Given that I'm at least reasonably connected on social media I'm probably not as completely in the dark as some my age, but I'm certainly not pop culture savvy.
What is "pop culture" even? Its just a measure of targeted advertising towards the most ill equipped to respond to it productively or healthily. There was pop culture targeting your parents, yourself, your kids, and there will be something targeting your kids kids.
The fact you show no interest in it is more a reflection that you got through the dredge of surface level vapid entertainment all kids are subject to, come out on the other side, and realize "hey look, theres stuff thats a lot better / more interesting than that" and unsurprisingly gravitate towards that over the next iteration of entry level disposable culture targeting kids.
That's exactly what the article above is saying. The kids aren't learning any problem solving skills. They may be better at following social media trends, knowing the latest memes, and finding the latest hot new app, but that has nothing to do with technical aptitude.