Nice summary, reads like a horror show, but all of it real. IIRC bitker cost us about $50,000 but that’s from memory, in any case out here in the wild west some of the early exchange folk are worse then the very worst corrupt bankers. Getting away form middlemen as you say is a much better proposition.
I am not into trading or exchanges so much, but you keep bringing up uniswap, does that not need to be erc20 or can it handle omni? I probably should know but …