dYdX is a layer-2 zk-rollup-based exchange that is definitely not decentralized in the sense that e.g. Uniswap is on layer-1. It still, however, inherits the security guarantees of L1 despite not being directly intractable with from L1.
even your L1 is 70% hosted nodes , why not just run an api on a trusted company's servers that verifies your balances using pub/priv keys and signatures
you guys are up for rude awakening when this rube goldberg machine bricks
