I don't think future generations are going to be very interested in tinkering with a C64 or an Apple II, but the 6502 will live on for a very long time.
There's a decent bunch of Gen Z'ers absolutely fascinated by the DOS 3.11 / Windows 95 era, and almost certainly also C64 / Apple II. Both the hardware and software from that time period was still novel, innovative, and plain weird. On the other hand, it is very clearly just a computer: you can hook it up to a network or play games on it.
It brought us Microsoft Bob, who wouldn't want to poke around with that?
With Retrozilla you can even comment into HN.
An Amiga or a classic Mac, OTOH, has a weirdness point.
I think it will be the exact opposite.