I'd say Raspberry Pi 400 could ignite a similar spark, I don't think you're comparing apples to apples here.

Smartphones are consumer devices. And a Raspberry Pi 400 is probably even more niche than 80s computers were in comparison.

In any case I don't think it's about the devices at all, there are just better things to do even for an introvert who doesn't go out much. Just different times.