I've tried VR, have a bunch of friends with headsets (and a team headset for work, since I work adjacent to AR/VR) and find it mildly interesting when I do try it but not interesting enough to buy a headset with my own money. My kids have both been offered turns but declined.
I honestly don't see the trend that you've been describing among my kids or their older peers. Honestly, NES is this generation's NES; I was shocked that "Marios & Bowsers" is now a playground game (it's basically sharks & minnows), and my kid will spend hours playing MarioKart if given a chance. My kid is an avid gamer but his favorites are all the Tower-defense games you get on Google Play, as well as classics like Tetris or Candy Crush and racing games like MarioKart.
I think there's also a trend - particularly among affluent families - of going back to basics and going outside for face-to-face entertainment more. IMHO the 2010s were the high water mark for gaming, and that if anything the trend today has been to detach from devices and have more actual experiences.