You maybe need to take another look at what an ES game is supposed to be. Why shouldn't they be in the game? This is a single player RPG, not a shooter game. It's a role playing game, one in which you can be whatever you want to be for the most part, that's a key part of an ES game, If a player wants to role play an OPed char so skilled with a sword that no one can match him, or a mage so powerful that he can wipe out dozens with ease than why should they not be able to? If that's what they want then their are paths for them to do it with, paths they have to deliberately choose to take and exploit, it isn't something a player will achieve accidentally without deliberately trying to do so. It caters to what the player wants to do, and the type of game they want to play, and thats the way an ES game should be plain and simple.
Not Beths fault that some players can't help themselves but to go for exploits to get OP builds and then whine because they have done so, nor should other RPs see their own options limited because of such players.