False information for digital I/O and analog inputs for avr board

From https://www.arduino.cc/en/Tutorial/AnalogInputPins

While the main function of the analog pins for most Arduino users is to read analog sensors, the analog pins also have all the functionality of general purpose input/output (GPIO) pins (the same as digital pins 0 - 13).

Consequently, if a user needs more general purpose input output pins, and all the analog pins are not in use, the analog pins may be used for GPIO.
Pin mapping

The analog pins can be used identically to the digital pins, using the aliases A0 (for analog input 0), A1, etc. For example, the code would look like this to set analog pin 0 to an output, and to set it HIGH:

pinMode(A0, OUTPUT);

digitalWrite(A0, HIGH);

From https://www.arduino.cc/en/Tutorial/DigitalPins

it is important to note that vast majority of Arduino (Atmega) analog pins, may be configured, and used, in exactly the same manner as digital pins.

So I think they've definitely made an attempt to provide this information but maybe there could be some wording added to the product pages as well.