Why isn't there a keyboard and mouse option even though the game is crossplay?

so I have been playing the game since release and I was excited when respawn added crossplay but why isn't there an option to pick certain controller even though the game is crossplay am sorry to compare apex to warzone but in warzone, in the settings, you have an option to choose what controller so I can pc with a console controller and or choose to play with console with a keyboard and mouse. but apex on the other side doesn't have this option even though the game is crossplay I know the crossplay is still currently on beta but am just curious.