Ethereum gas fees just hit near-zero. And most people have no idea what that actually unlocks. Gas fees used to be the toll booth on the Ethereum highway. Peak bull run? Eighty dollars just to swap on Uniswap. That killed retail. Whales ate, everyone else got priced out. But after EIP-4844 — Proto-Danksharding — Layer 2s like Arbitrum and Base are settling transactions for fractions of a cent. Her…