Comment Entirely plausible (Score 1) 92
And anyone who has ever used a $2 ESP32 microcontroller should know just how plausible this could be...
Those things are scarily powerful for their price (likely a dumping strategy) and could quite easily embed a BLE or WiFi backdoor into anything from a disposable vape (which contains a microphone for your puffing convenience of course) to a car to an industrial robot, and so I would not be at all surprised to find them in Solar inverters.
Quite frankly, with its roughly 1MB of obfuscated/encrypted ROM, and radio in applications that shouldn't need radio, espressif ought to be treated with as much if not more suspicion than Huawei