It looks like the CEO is suing Circle....not sure why USDC would be to blame. If in fact his claim is true - a single transcription error of 8 -> B, then that would indicate that Coinbase's own wallet isn't enforcing EIP-55 (address checksums).

In that case, its reasonable to sue Coinbase as they're not providing reasonable level of protection to customers even though such technology is available and considered standard.

Who knows what the truth is.....