The gospel is not a promise of economic restoration. First and second century believers lived under serious economic persecution from Rome, yet their hope remained steadfast and the gospel never lost its efficacy and power.
The gospel is surely good news for this life, in many, many ways, but it’s not a guarantee of physical prosperity and restoration. We’re exiles and sojourners in a world not our own.
Also, to argue that the Exodus is, primarily, a gospel-promise for temporal deliverance from various societal ills is to, IMO, miss the typological and figural intention baked into that physical event. It’s to miss the divinely-intended forest for a couple of trees.