Uniswap, the leading decentralized exchange on Ethereum, has long embraced the idea of deploying on many chains. Bringing Uniswap’s advantages — fast transactions and low fees among them — to the wide world of other chains is almost universally seen as a net good. Uniswap v3 already exists on Arbitrum, Celo, Optimism, and Polygon, and there are others under consideration. With Uniswap v3 subject to a business license until April of this year, a little time still remains to deploy to new chain...