This news is quite surprising. Errors in managing transaction costs at fantastic or abnormal prices occur twice. Similar mistakes, with the exact same transaction fees, lead to the assumption that this is intentional. There is an assumption that this is a mode of money laundering.
But I doubt this assumption because the sender cannot determine the miner for "cooperation" in money laundering, it is set automatically in the ethereum blockchain. I agree with the following explanation
~We believe the transaction happened using automatic transfer, since almost 2x times not a human error. If you compare it with manual transaction, there a 1-2x times confirmation did you want to send transaction or not and some preview transaction. Everyone should be aware if they type a wrong amount to be filled when he wan to fill the amount send but unfortunately he set up on the fee column.
It could also be due to human error, the sender is sleepy or is out of focus so that he incorrectly entered the nominal for the fee column and the amount sent. I don't know, which is true.