This is hard to believe. Chicago having established itself as the biggest manufacturer of beef in the US with the formation of the stockyards, developed a reputation for its steakhouses more than any city in the US including New York. The city is literally known for its traditional old school steakhouses so I find it hard to believe you went to any of the top steakhouses - Chicago Cut, Chicago Chop, Gene & Georgetti, Smith & Wollensky, RPM, Benny’s, GT Prime, or Kinzie and just saw people dressed casually. These places literally pride themselves on their dress codes.
To be fair, I’ve seen twerking in Ruth Chris.
the major Ruth Chris here is surrounded by Hotels