Since you cannot cut and paste AI results from Google, this is the search I used.

when was the State Farm Stadium nicknamed the Q

This is the answer it gave me

State Farm Stadium was known as the "Q" after the Queen of the Desert, referring to Queen of the Desert, a 1930 film, and its role as the home stadium for the NFL's Arizona Cardinals. The nickname is not official, but refers to the team's name and is most popular among fans.

How the stadium was nicknamed the "Q"

Queen of the Desert: The term is a playful reference to the Queen of the Desert, a 1930 film that featured the history and culture of the region in which the stadium is located.

Arizona Cardinals: In 2006, the stadium was the home of the Arizona Cardinals, and many fans began to refer to the stadium as "The Q" for "Queen of the Desert".

Official and Unofficial: The name is unofficial and most commonly used by fans.

This is obviously different than the results that were listed above. So now I’m not sure other than the fact that you can’t get any actual information on the Internet anymore. 🤷‍♀️