There is not a single app using this API in "approved" state, let alone active use. The API is kept very simple, its implementation has just entered a beta stag

There is not a single app using this API in "approved" state, let alone active use. The API is kept very simple, its implementation has just entered a beta stage, and the Bluetooth tech it uses is almost a decade old already. And the entire idea of contact tracing via BT has been discussed for months already by several teams worldwide and already been implemented a few times in various ways, so it's not exactly new either. But don't worry, just go on with your demonstrative "critical thinking"...