One of the more respected survey organizations in the U.S. is the Pew Research Center, and in 2023 they surveyed about 12,000 folks across the U.S. to explore attitudes towards American sports. Their main takeaways? About 6 in 10 Americans (62%) don't follow professional or college sports at all, or only casually. Only 16% follow them very/extremely closely (following sports daily and/or talking about them daily with someone somehow). Of that 16%, most only follow the 'big three' sports of football, baseball, and basketball (see: Most Americans don’t closely follow professional or college sports | Pew Research Center).
You get the idea. For the average American, even remembering who the quarterback of the Kansas City Chiefs is a challenge, let alone which American won the gold medal at the 2024 Paris Olympic Games. T&F just isn't on their radar. At. all. Nada. Maybe the odd sports fan can recall the name of Carl Lewis, but they'd be hard pressed to name more than a couple more athletes of any era.
That being said, Olympic sports (including the cornerstone T&F events) continue to be a big draw among Americans, with the Paris Games averaging over 32 million American viewers a day over a couple of weeks (similar to an NBA Finals deciding match, more than a World Series baseball game, but far less than the 123 million that tuned in for the 2024 NFL Super Bowl), a big increase over the 2020 Tokyo Games. Even though most Olympic viewers are casual and they couldn't name a single American T&F athlete a week after the Games' closing ceremonies even if their life depended on it, the concept and spectacle of the Games still matters to many 'average Americans'.