The point is that knowing what you don't know allows you to hedge your bets on events far into the future; my child will need to become productive 20 years from now and maintain it for 40-50 years. So, it's a bit like trying to educate a kid born in the 60s for the web era, you can't and you shouldn't even try.

What you can do though, is to offer them broad exposure to things that are interesting to them and their generation; my eastern block clone of the 8bit/48KB Spectrum computer didn't really help me excel at math, reading or history, nor was it to be the future of technology, but it did change my life significantly by letting me understand and relate to people that I couldn't otherwise have business dealings decades later.

It seems imprudent to cut children off from futuristic technology just because of a moral panic that it causes brain rot. Unless we know it's soma, a drug so powerful that it subdues volition and curtails intellectual development; we don't.