It's not about the nostalgia. The nostalgia is present in lots of retrocomputing fandoms that aren't anywhere near as vulnerable to scams as the Amigans. RISC OS fans are nostalgic. NES fans are nostalgic. People insisting on re-building a Vax in their basement are nostalgic.

Nostalgia drives things like some guy puts together an order for Amiga logo keycaps, and sells them for barely more than cost price and maybe a couple of people feel the quality isn't as good as they expected. That's not a scam.

But the Amiga will also have a company that says it's going to sponsor a new sports arena for so much money it'll be named the Amiga arena - when there isn't any money. That's not an imaginary example by the way, it happened: https://www.seattletimes.com/seattle-news/amiga-fails-to-del...

Ten years ago one of the Amiga companies told potential customers it would ship them a new multi-core PowerPC Amiga, within the year, with a new OS version that supported using multiple cores. A huge breakthrough. It didn't ship that year, and when it did ship it came with a "preview" that lacked support for the multi-core processor, and you will not be surprised to learn that almost a decade later those customers are still waiting for their "final" version with working multi-core.

But in many ways being heavily down-voted shows exactly why this works. Amigans are sure that if they are insistent enough that it's not a scam then it won't be. They just need to have faith, click that downvote, tell people they're wrong, if I scream loud enough that I can fly surely gravity will just have to believe me...