ETH gas fees just hit near zero. Three things just changed forever in DeFi — and most traders are still sleeping on this. Number one: micro-transactions are back. Swapping $50 on Uniswap no longer costs you $40 in gas. That math finally works. Number two: NFT trading is alive again. Minting and flipping was dead when fees ate your entire margin. Now a full mint costs under a dollar — watch NFT vol…