Strange airdrop transactions

Question re. a strange pylon governance contract interaction, not sure if this is a bug: I am a MINE staker, and on Nov 22, I see really strange transactions, where hundreds of small transactions are bundled into one, and transaction fees of 25-50 UST (!) are deducted from my wallet. Example below. What is going on here, and does this mean the transaction fees are deducted from my wallet?

This was the preparation for doing airdrops, and it is always the sender who pays TX fees. Meaning that pylon governance paid, not you.