Celebrim
Legend
If a fighter or wizard dump stats charisma though and avoids most of the drawbacks, this is cheating?
It depends on what you mean by that. If I dump stat Charisma, I can 'avoid' most or even all of the drawbacks by simply not interacting with NPC's and resolving the challenges I'm faced with by some other means - brute force or magic or stealth or whatever. Is that cheating? Of course not.
But, if I dump stat Charisma and then interact with NPC's with the expectation that my personal charisma as a player exempted me from the penalties of reduced Charisma (as it generally would in a system without a lot of social rules), then its a much grayer area.
And, if I dump stat Intelligence and then rely on my extensive personal knowledge to resolve all problems, then that is a murkier area still. Imagine for example the situation of RPing with a person who has a Ph.D. in biology (which is by no means a purely theoretical example) in a game with a biology skill, in which the player has no ranks in biology, but asks penetrating biological questions and in character describes conducting sophisticated biological experiments. Or imagine RPing with a engineer who describes in elaborate detail how to construct fortifications and war machines, despite having no ranks in engineering as a character. At what point does such behavior become detrimental to play?