I should say, I think Coinbase is relatively well situated to capitalize on crypto, and it's a real business. I also think it's pretty well situated to shrink and deleverage if there's a decline in the crypto market. I don't think they're a scam.
I just mean that using market approval as evidence that the market is real, not a scam, not a trend, or does something useful is foolish. The point-in-time correlation of market success and fundamental success is nearly 0, even if the long-term correlation is very high.
Recently see also: NFT mania. Surely you'd rather be the artist that gets paid $50 million for selling some bits even as the process is widely derided, since you the artist aren't the bag-holder later on when it turns out the bits aren't worth $50 million.
I thought it was funny and an actual tax on stupidity, but now i understand that it was targeted at poor and/or young people who did not really had to money to loose in these schemes.