I think we need some clarification as to whether the core module is not included in what was said in March:
We’ve stockpiled spare parts with the purpose of having them available for a minimum of three years after the last Fairphone 2 is sold
From the support response quoted in the original post, it seems that this might have only meant the spare parts directly “buy-able” in the shop. However, I do not agree that this means that Fairphone was altogether out of core modules. My guess would be that they are reserving them for warranty repairs.