Recently, people keep asking whether retail investors need to understand blockchain builders, bundles, and so on... I think, knowing that "your transaction may not be included in the block in the order you submit" and "someone might bundle several transactions together" is enough. To put it simply, don't try to compete with them in speed; it's more about managing yourself: don't randomly authorize, don't chase suspicious links that look obviously fake, especially now with phishing on the rise and hardware wallets out of stock. If you lose it, it's not just a matter of losing some fees. I usually use a reliable wallet + a whitelist of frequently used addresses, and I check the recipient before sending. As for the rest... let them compete; I'm going to take a nap.