A lot of money, about $11 million, was taken out of circulation by making it impossible to use. This happened because of a change in how Ethereum works. Before, people had to pay fees when they used Ethereum, but now those fees are destroyed and cannot be used again. This makes the amount of money available from Ethereum go down over time. Read from source...

1. The title is misleading and sensationalist. It implies that someone intentionally destroyed $11M worth of Ether, when in fact it was a natural consequence of the fee model change implemented by Ethereum. A more accurate title would be something like "5,155 ETH Worth $11M Burned Due to Ethereum Fee Model Change".
2. The article contains several grammatical and spelling errors, such as "at time of publication ($2,269.81)" instead of "at the time of publication ($2,269.81)". This shows a lack of attention to detail and professionalism.