Lately, people keep talking about blockchain builders, bundles, MEV, and so on. My conclusion is quite cynical: retail investors just need to know that "they might be in line and get cut in line," and shouldn't waste energy on memorizing concepts. Just remember a few things: use reliable wallets/routers, don't click on unknown sources for signatures; for large transactions, try to split them up and use protected paths (at least don't go naked into the public pool); if you see slippage suddenly become outrageous, wait and confirm first, don't force it.

Especially now, with new L1/L2 chains offering incentives while pulling TVL, it's not unreasonable for veteran users to criticize "mining, selling, and dumping"... On-chain, there are people specifically watching your swap transactions. Anyway, I prefer to wait for a correction, wait until I think things through before acting, to avoid working for others.