They're sending 546 sats and paying 5-6x that in Tx fees, so their objective must be Tx spam. This just goes to show how Bitcoin's Tx fee structure is very good for discouraging Tx spam. These are expensive transactions that this entity is making.
https://mempool.space/address/bc1p5f5p275q0awzm8mf09exll3zzl4w765gjskrsv9rjqum5uc9qwhqutds34
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