On-chain "cutting in line" is not really about moral corruption; it's just that when the ordering authority is there, someone will always use it. The biggest impact is on two types of people: first, retail investors who confirm transactions slowly—you think you're trading at the price you see, but someone else pre-fills a transaction to push the pool away; second, market makers/arbitrageurs, whose profits are directly skimmed off as "milk tea money" when they get sandwiched... and then you blame yourself for being slow. The so-called "fairness" is more about whether you have the chance to participate in the same auction/bidding rules, rather than pretending everyone starts at the same line. Recently, a mainstream public chain is about to upgrade/maintain, and people are guessing whether projects will move away. I think a more realistic view is: if the mechanism of ordering and block production doesn't change, switching to any other chain is the same—cutting in line is just changing the disguise and continuing to queue for tolls. Anyway, whenever I see large slippage or strange failed orders, I default to thinking someone is secretly boosting their strength nearby.