No, you seem to not understand. Modern games dont do the _most basic_ validation on player submitted input - you can use cheats to fly in Apex Legends, Fortnite, PUBG, Fall Guys. None of those games check something as basic as feasibility of submitted player position/physics. Hell, even something as basic as Among Us doesnt run any server side checks and rudimentary cheats let you see everything, move thru walls, or even impersonate other players.