Personally, I'd would say another advantage is sdk. IMO ESP-IDF is up there with Silabs and nRF in the top tier of dev experience. Then STM/TI etc and Microchip

Personally, I'd would say another advantage is sdk. IMO ESP-IDF is up there with Silabs and nRF in the top tier of dev experience. Then STM/TI etc and Microchip a very distant last. The ESP32 isn't ideal for basic battery stuff that needs to be awake all the time, or size constrained stuff - that's where nRF and BLE shines (or Silabs/Cypress). However, in deep sleep you can get 10uA< which is decent assuming you wake up rarely, do a bit of WiFi work and go back to sleep. For the right job (powered stuff that needs BLE, WiFi or ethernet, maybe hosting a local webserver for config and/or mqtt) the ESP32 is an absolute bargain compared to alternatives and a pleasure to work with to boot. The modules also typically have lots of flash onboard, ideal for embedding web UIs.