The NFL has changed the kickoff in a lot of ways. In 2024, the league changed to the dynamic kickoff and altered the rules ahead of the 2025 season. In a lot of ways, the altered kickoff format has worked. It has some detractors, but it certainly has made the kickoff a bigger part of the game than it was when teams routinely booted the ball out the back of the end zone for a touchback.
However, it’s arguably made a negative impact on onside kicks. Since the format for normal kickoffs is now different, teams have to declare their onside kick attempts.