> They see BTC as an investment rather than a currency.
So you'd argue that the stock market is a scam too, since people use stocks not as a "what a company is worth" but as a investment they expect to gain in value, and they try to push narratives to support that?
Nobody believes that Coca-Cola shares will be the basis of the coming economic system.
Bitcoin lacks anything resembling intrinsic value. The intrinsic value of a Coca-Cola share is that you will receive a part of the profit of the company.
Bitcoin is terrible money. It is less private than any bank account. It is significantly slower and pricier than any bank account for transactions. It removes control over money from governments and other institutions (which is by itself a death sentence).