Ok. I'm pretty surprised that a miner would mine that type of tx today.
In the future, those dust amounts would in theory be worth more, so they will become
common again as time goes on, but currently that is a lot of data added to the blockchain
for just $0.58 USD. The mining cost to add that tx to the chain must have been at least $1.28 USD.
But I guess you are correct, there are some re-broadcasts that are "neutral".