New to the UTXO topic and shocked to find fees are so high.

Can anyone explain why there are so many of these transactions in the Mempool that send ‎0.00000546 BTC to hundreds of addresses and pay enormous $2000 fees?

who would throw away so much money to unconsolidate so many small amounts of Satoshis? doesn't that mean they are forever after lost/unspendable in high fee environment?