For competitive gaming this becomes a problem.

But a good way of solving this in community managed multiplayer games is this: if a player is extremely good to the point where it’s destroying the fun of every other player: just kick them out.

Unfair if they weren’t cheating? Sure. But they can go play against better players elsewhere. Dominating 63 other players and ruining their day isn’t a right. You don’t need to prove beyond reasonable doubt they’re cheating if you treat this as community moderation.