Bitcoin has always been an application for demonstrating the engineering achievements behind it (solving byzantine faults, fungibility of data), so we can build even greater tools like smart contracts, programmable money, trust-less p2p networks, etc so many things. I think labeling bitcoin as a scam is a huge insult to those engineers involved. Engineers like Hal Finney who dedicated his life trying to make a brighter future for everyone, I don't think it is fair to call his and others work an elaborate ponzi scheme.
The bitcoin space has so much history, a lot of battles have been fought on bitcointalk, over mailing lists and pull requests, etc. I feel that as developers we should focus less on financial markets and more technical discussion. Bitcoin has a lot of new things to talk about with the Taproot activation, like schnorr signatures and private lightning transactions. I'd like to see those discussions more on HN but that's just my opinion.