How has proposer-builder separation and PBS after The Merge actually changed MEV extraction compared to the old miner days?

In the pre-Merge era, miners directly controlled transaction ordering within blocks, giving them full authority to extract Maximal Extractable Value through practices such as frontrunning, sandwich attacks, and direct arbitrage. This created concentrated power where a small set of mining pools captured the majority of MEV, often at the expense of regular users who faced higher slippage and hidden costs. After Ethereum's transition to proof-of-stake and the implementation of Proposer-Builder Separation via PBS, the landscape shifted dramatically. Proposers, now validators, are separated from builders who specialize in constructing optimal blocks by bundling transactions and MEV opportunities. This auction-based system, primarily through MEV-Boost, allows validators to sell block space to the highest-bidding builder, democratizing access while introducing new dynamics. Builders compete fiercely, and the extracted MEV is partially passed to validators as increased staking yields, with estimates showing validators capturing roughly 60-70 percent of total MEV post-Merge according to historical on-chain data. At VixShield, we view these market mechanics through the lens of our SPX Mastery methodology, where understanding systemic risks like MEV-driven volatility informs our daily 1DTE Iron Condor Command executions. Our RSAi™ engine incorporates real-time skew analysis that can be subtly influenced by large MEV flows, helping us select strikes via the EDR indicator to target precise credits of 0.70 for Conservative, 1.15 for Balanced, and 1.60 for Aggressive tiers. The ALVH hedge layers provide essential protection during periods when MEV spikes coincide with VIX elevations above 16, as seen in our current market data with VIX at 17.95. This separation has reduced some predatory miner behaviors but introduced builder centralization risks, where a few dominant builders handle over 80 percent of blocks. Our Theta Time Shift mechanism stands ready to roll threatened positions forward during such volatility events, turning potential drawdowns into theta-driven recoveries without adding capital. Position sizing remains strictly capped at 10 percent of account balance to maintain resilience. All trading involves substantial risk of loss and is not suitable for all investors. For deeper integration of these concepts into consistent income generation, explore the SPX Mastery book series and join our live sessions at VixShield.com to access daily signals and the full Unlimited Cash System framework.