I found that on-chain "coincidental transfers" are mostly not coincidences: either the same money goes around a bridge/aggregator/relay wallet in a circle, or it's task platforms issuing, reclaiming, and redistributing. Once you break down the paths, it's quite straightforward. During airdrop season, it's even more obvious; anti-witchcraft measures make everyone feel like clocking in at work, with a points system, and the "passing the ball" between addresses increases... Watching the spectacle, it's actually quite mechanical. If I had to keep only one habit, it would be to clear all unlimited authorizations once a week.