Yes, and sleep(), delay(), yield() in Arduino Core for ESP\* are task switch to ...

numpad0 on Dec 21, 2022 | parent | context | favorite | on: Saving power on an ESP8266 web server using delays

Yes, and sleep(), delay(), yield() in Arduino Core for ESP* are task switch to and from Wi-Fi handling code, not busy-loop delays. Espressif seems to have put a lot of scaffolding for you behind the Upload button.