Read that article. That has no relation to the NCAA other then its NCAA teams playing in it. Thats the College Football Playoff National Championship, it is not an NCAA Playoffs or NCAA Final. Its one way in which some people determine a National Champion. According to your same source: "Division I FBS football is the only
National Collegiate Athletic Association (NCAA) sport for which the NCAA does not sanction a yearly championship event. As such, it is sometimes unofficially referred to as a "
mythical national championship"." [...] "Due to the lack of an official NCAA title, determining the nation's top college football team has often engendered controversy.
[5] A championship team is independently declared by multiple individuals and organizations, often referred to as "selectors".
[6]:107–109 These choices are not always unanimous" [...] "While the NCAA has never officially endorsed a championship team, it has documented the choices of some selectors in its official
NCAA Football Bowl Subdivision Records publication.
[6]:107–119 In addition, various analysts have independently published their own choices for each season. These opinions can often diverge with others as well as individual schools' claims to national titles, which may or may not correlate to the selections published elsewhere. "