@miah I think they're like weirdly just making things and undercutting competition because they're I believe primarily based in China, not just MFG there. The worst you could say is Tuya buys from them but they also buy from others.
It's wild when you can even find knockoff ESP32s that aren't from Espressif.
@ceralor Ya, I love the embedded world of STM/Espressif because its actually very inexpensive to get into, and there are clones of everything! Even like logic analyzers are only $12. For the price of a single Pi4 I can buy multiple esp32's, components, etc. Of course the... learning/implementation curve is a bit different on embedded vs 'install a Linux image on Pi'.