Lately, I keep seeing people complain about "unfair ordering," miners/validators earning too much MEV, and so on. Honestly, retail investors really don't need to study block builders or bundling to the point of writing papers... Knowing three things should be enough: your transaction might not be included in the block in the order you submit; the "tip" (gas/fee) you offer will influence how it gets prioritized; and a transaction might actually be bundled into a package (bundle) before being on-chain and smuggled.

I personally treat it as "traffic conditions": if you want to be more stable, avoid rushing during congestion times, don't set too high slippage, and don't break a large order into too regular chunks. A couple of days ago, I saw on-chain traces of the same swap, where someone first inserted a small buy order with 0x8f3… and then sold back, classic move... Anyway, don’t expect perfect fairness. Just do your best to avoid operations that are easily exploited.