Recently, I've seen a bunch of people talking about "on-chain queue jumping," which basically means whoever bids higher gets to buy first.

It has a pretty direct impact on regular traders: you think you're executing at market price, but in reality, you're squeezed from both sides, taking a bigger slippage, or ending up with a worse fill.
It looks like a "technical detail," but in fact, it's just shifting the losses onto the least knowledgeable people.

The attention shifts more obviously with memes; when it's hot, a bunch of newcomers rush in, and they're most likely to get front-run and driven by emotion, only to find they're catching the tail end.
Now I can mostly avoid market orders; I'd rather place slow limit orders and tighten my slippage settings...
Anyway, I don't want to be fuel for others' transaction fees.