I don't think it contradicts because you're upgrading from one standard to another. You are not selecting to have two standards in a new house. Or if you are

I don't think it contradicts because you're upgrading from one standard to another. You are not selecting to have two standards in a new house. Or if you are building two new houses, you're not building one with Soviet standard and the other house with EU standard. Your case is more like EU upgrading from Mini-USB to USB-C as the standard plug for mobile phones.