The point is that its a highly failure prone requirement with dire consequences. Imagine if you were designing a car and the Business Analyst told you that this car needed a constant internet connection at all times or else the engine would immediately cease injecting gas.

While you could blame the engineers for all the cars that died in the middle of highways, it'd be far more realistic to blame the Business Analyst for demanding such an arduous and failure prone requirement.

Engineers can only make things work to a point and after that some real world limitations need to be taken into account.