But that doesn't mean it isn't about the tech.
Many of us are still on the edge of tech now, which means we have around 40 years of evolution, concepts, pitfalls - and the things that happened to society when we let it loose to the masses. It's a bit like putting genie back in the bottle again and enjoy the naive times.
I also think people can learn a lot from the platforms of the past. While computers have gotten objectively more capable over the decades, I think there’s a lot we can learn from the systems of the past. I feel this is especially true in the area of usability. There was a lot of work done in the 1980s and 1990s on usability research, and Apple and Microsoft published human interface guidelines describing how software written for the classic Mac OS and Windows should behave. However, consistency has been sidelined in favor of branding and other marketing concerns at the expense of usability. Using applications designed for Macintosh System 7 or Windows 95 will give people the experience of using applications back when conforming to UI guidelines was a big deal.
Nostalgia is great and is one reason I retrocompute, but it’s more than that for me.