and other allegedly monopolistic aspects such as merchandising and race-track ownership. In addition, due to its influence and lack of drivers' say, NASCAR has been described as a "benevolent dictatorship", with a top-heavy command structure that tends to keep dissenters in line. Examples of such influence included the cancellation of the Speed Channel television show Pit Bull (which frequently criticized many of NASCAR's decisions and policies and enjoyed modest ratings), frequent use of the vague "detrimental to NASCAR" rule, and the creation of rules on whim, especially during a race. NASCAR has taken to penalizing drivers in recent years, with fines, point penalties, and lap penalties in races for drivers or mechanics who use obscene language in interviews to the media. Because of Fox Sports' heavy affiliation with NASCAR, a fair amount of the network's programming is NASCAR-related. The charter system, introduced in 2016 with the involvement of Race Team Alliance, has also been criticized as increasing entry barrier for new teams to enter the Cup Series while favoring larger, established teams with multiple cars and allowing smaller ones possessing charters to stagnate on-track. Following the announcement that Leavine Family Racing was shutting down at the end of the 2020 season, team owner Bob Leavine claimed that the team did not get the most of the charter for what he paid for it. Driver competition in multiple series NASCAR has long allowed drivers to compete in as many series and events as they like, with few restrictions. However, in recent years, many Cup Series drivers have competed in and dominated the lower tier Xfinity Series races on a regular basis, earning Cup drivers the nickname "Buschwhackers" (derived from the 1984–2007 sponsorship of NASCAR's second-highest series by Busch Beer). The situation is compounded by the close timing of the races in the two series: a typical NASCAR weekend has an Xfinity race on Saturday followed by a Cup race on Sunday at the same track. Some have wondered why "major league" Cup drivers are allowed to compete in the "minor league" races with such frequency, and whether Xfinity is an adequate developmental series. Sportswriter Bob Margolis noted that much of this is due to the similarities between the cars used in the two series (they are mostly alike except for the engines and the wheelbase), and the desire for Cup drivers to get as much practice time as possible to learn