Don't worry, they will always have new Minecraft mobs and biomes to discuss.

Interesting idea, online gaming becoming the de facto new societal community meeting space.

As a parent of pre and actual teens, this isn't "becoming", it is the de facto standard. Minecraft, Roblox, Fortnite are our kids' third place https://en.wikipedia.org/wiki/Third_place

Until games also become uniquely generative in realtime

For multiplayer games, I'm not sure that would be a detriment to the experience in any way.

Procedural generation is a known quantity in gaming, with well-explored pros and cons.

But if the marketing fueling the industry is to be believed, every parent will be able to build a tailor-made game for their child. I know that won’t really how it’ll turn out but it’s a funny exercise to think about.