I cant believe that this person sent 0.1 Ether with 2,100 Ether transaction fee. I am pretty sure that this person is crying out right now and just shaking his / her head repeatedly. What will you do if this happens to you? How will you comfort your self at a time like this? 2,100 Ethereum for transaction fee really is a big amount and unfair on that person but a mistake was already made. I hope that he can contact the miner who processed that transaction for reimbursement which is I think possible. Look on the reference below.
https://etherscan.io/tx/0x1f73b43dc9c48cc131a931fac7095de9e5eba0c5184ec0c5c5f1f32efa2a6babI have seen this problem since 10 days ago. And I believe this is just a small incident from someone. No one is stupid enough to adjust gas fees like that
Yes it's not a default fees. Someone did intentionally changed there are no way a person would be confused between sending amount and transaction fees.
It could be some sort of experiment or some miners practicing their preciseness in selecting the block.