Fedimint does NOT have the same security model as Liquid. A dishonest fedimint can debase their ecash and misuse user funds, recreating fractional reserve banking. This is impossible to do covertly on Liquid, because everything is public and visible on the blockchain. "Blockchains do not scale" is an obvious lie, since Bitcoin itself is a blockchain and we all expect it to scale. Every scaling solution proposed for Bitcoin: fedimint, LN, covenants, can also be implemented in a sidechain, cheaper, faster and better