Lately I keep hearing people talk about block builders, bundles, MEV—

I feel retail investors really don't need to push themselves to become protocol developers…
Honestly, knowing three things is enough: after you click "Trade," your order may not go directly into a block, it could be bundled, front-run, or even someone else might "snatch" the price difference along the way;
so don't impulsively set a very wide slippage, and don't chase aggressively when liquidity is thin;
and also, don't believe that clicking "refresh/retry" multiple times will make it faster—sometimes you're just entering another queue.

Modularization and the DAO layer narrative are quite popular now, developers are excited but it's normal for users to be confused.
For someone like me who leans toward hedging, the conclusion is simple: you don't need to understand how DA works, just remember that trade execution is becoming more like a supply chain,
try to use reliable front-end/routing, split large amounts into smaller orders, and avoid creating opportunities for bundle optimization.
That's it for now—surviving is more important than understanding the terminology.