You're hand-waving away all the complexity in the "nitty gritty." Enqueue absolutely requires coordination, if not via leader then at least amongst multiple no

You're hand-waving away all the complexity in the "nitty gritty." Enqueue absolutely requires coordination, if not via leader then at least amongst multiple nodes, if you want to guarantee at least once delivery If you don't guarantee that, cool, but you're not competing with sqs