Thanks for the reply! I would like to wait for an response from the docs team, as configuring VDD_SPI into GPIO11 involves changing an efuse bit, and once it's changed it cannot be reverted.

I have recently come across an issue where I ran out of GPIO pins on an ESP32-C3FN4, as per the datasheet says, VDD_SPI pin can be used as GPIO11, However I am unsure If it would effect the power supply for the built-in flash, as there is no diagram on how the internal 4Mb of flash is being powered....