Good because it advocates for more regulation and consumer protection, and points out some obvious concerns with crypto like energy expenditure in proof of work.
Bad because the letter misrepresents the technology and paints privacy as a purely criminal behavior, and suggests the entire technology sector is useless.
> Similarly, most public blockchain-based financial products are a disaster for financial privacy; the exceptions are a handful of emerging privacy-focused blockchain finance alternatives, and these are a gift to money-launderers.
Imagine this argument being applied to End-to-End Encryption. "Most chat messaging apps are a disaster for user privacy; except the ones that are privacy-focused and use E2EE, and those are a gift to terrorists and criminals."
There's lots of privacy preserving crypto tech: Monero, ZCash, TornadoCash, and soon Aztec. zk-SNARK and zk-STARK are recent advances here that dramatically change the future landscape. You can also use CEX as a mixer to provide soft anonymity, allowing regulators and IRS to track your finances, without revealing your accounts to the whole world.
> Blockchain technology cannot, and will not, have transaction reversal mechanisms because they are antithetical to its base design.
This is false. There is a lot of blockchain technology that has transaction reversal mechanisms. USDC and other centralized stablecoins can freeze and mint tokens. Optimistic rollups are built around the very design of transaction reversal. Many NFT projects give the contract owner ability to mint, burn, change metadata, and so on. The original DAO itself was drained and funds reverted by a hard fork, and yet ETH and ETC still continue to exist just fine.
> By its very design, blockchain technology, specifically so-called "public blockchains", are poorly suited for just about every purpose currently touted as a present or potential source of public benefit.
Bah! Perhaps some of the authors would like to shill their own private blockchain companies (Adjoint Inc).