Comment by Rohansi

The most common ESP32 boards now are still the Xtensa ones. Not all of the variants have WiFi. Some only have one core. A lot more variants than many would expect.

Comparisons to a Raspberry Pi are a stretch IMO. It is not a single board computer. You can't hook it up to a monitor/TV, plug a mouse and keyboard in, and use it as a Linux PC. However, there are people who use Raspberry Pis like a microcontroller because of its GPIOs... but they should all be using microcontrollers instead.