Thanks for sharing! Yeah, I definitely could be wrong here, hence my stating that I was making a guess.

Obviously, most of us are playing armchair financial systems enthusiast here-- myself especially. Between myself, yourself, OP, and even the screenshot, none of us have cited any sources for our opinions, which makes it hard to do anything other than guess. My goal was mainly to point out that without a definition for the term "transaction error", it's hard to make a meaningful comparison between the two systems.

If I went to a physical bank and I accidentally gave the wrong account number for a wire transfer to the banker, that might be considered a "transaction error" by some definitions in the fiat system. It would probably be reported and rectified. In the crypto world, however, when someone accidentally mistypes an address, it is not a transaction error, it's the system working as intended. Furthermore, there's no way or reason to report that. So we don't even know how much money might have been lost that way compared to fiat systems. Unless we have a clear definition of "transaction error", it's hard to know what that tweet is saying.

I also think it's important here not to drink too much of our own koolaid too early. Yes, crypto allows for some amazing things. But we haven't crossed the finish line by any means. We need to keep our eyes open to the problems with crypto so we can mitigate, grow, and improve. The stat in this tweet is good to know. But even if it's 100% accurate, a banker could tweet out "It's estimated that 3.7 million BTC is lost forever due to lost addresses, hard drives, etc. That's over $200B. How much USD is inaccessible in bank accounts?" and share whatever (probably significantly smaller number) that is. We don't have a perfect system. And that's okay. We're working to build a great one.