Are you kidding?
Urban Cowboy made country go through the roof. It was on the REGULAR charts big time for a few years AFTER that. Even in the country surge in the ‘90s, which I loved, country did not make it on the pop 40.
SNF OTOH was in the middle of the disco craze so it more punctuated it rather than driving it.
No, I’m not kidding. What passed for country post UC was a pale imitation of what country was before UC. Just because it is popular doesn’t mean it is good.