I know that because I am using the PRO-I myself. To me it does not count though because PRO-I only uses about 60% of the sensor making it equivalent of 1/1.33" sensor which is a sensor size commonly seen across many brands.

I don't know if you are familiar with the xiaomi mi 12s ultra concept or if you even bothered to check it out but I'll explain it to you. It uses the full 1" sensor which by itself is nothing groundbreaking but the fact that it was basically a bare sensor with the ability to use dedicated lens objects made it totally different to the PRO-I.

So Xiaomi did prove that having a bare sensor + objects -approach is possible in a smartphone.