Onshore accounts and the 'trust' factor for offshore operations

Been thinking a lot about the inherent reliance on onshore banking for liquidity and operational support, even for seemingly robust offshore structures. It feels like the entire offshore banking discussion often dances around the fact that at some point, real-world assets touch the regulated, onshore system. The supposed 'independence' or 'security' of an offshore account often boils down to the stability and trustworthiness of its onshore partners, or where the actual capital is domiciled before it's moved. Even for something like PLTR at $171.54, if you're taking profits from an offshore brokerage, that cash still needs a path back to a usable currency in a mainstream account.

Are we perhaps overstating the 'insulation' offshore banking truly provides, given the interdependencies? It seems like it's more about jurisdiction shopping for tax/privacy than genuine detachment. Push back if you think I'm missing something fundamental here.