The lore goes on inherent variable, why shouldn't the game? Inherent variable would not exclude anybody from playing any race how they would like. People could still make JoaTs out the wahzoo. I'm not defining how anybody should play, just expanding on how some may like to play, myself not being the only one obviously.
The lore you say? Where, when? Inherent you say? Essential? They are so essential many good RPGs do not use them, do not use those and still are very good and functional RPGs. What's so inherent to attributes that makes Skyrim plain not work at all without them?
Also, what do you think perk is short for? Perquisites.
http://en.wikipedia.org/wiki/Genetic_fallacy – where a conclusion is suggested based solely on something or someone's origin rather than its current meaning or context
Origin of "perk" word has no bearing on the subject. Only the current meaning of the word counts. For Skyrim, a perk is some kind of talent, secret trick, magicka induced genetic modification or whatever but bares little relation with the "perquisite" meaning.