I played against the EVO 2025 world champion Street Fighter 6 player in ranked matchmaking last week. When's the last time your county cricket team played against anyone who's won the Cricket World Cup?
We're fundamentally talking about different activities here. Lamar Jackson doesn't get to choose who he plays against in the NFL; if he wants to win the Super Bowl he has to play against Joe Burrow. If Joe Burrow cheats by deflating some footballs, there has to be a system in place which catches him and doles out appropriate punishment. Your "solution" is essentially telling Lamar to not worry about it and just play flag football with his friends instead.
I realize this type of activity isn't for everyone, and there's something to be said about too many games becoming overly competitive, but your proposed solution doesn't really address the problem.