You're going about this the wrong way. The reason they don't count as modifiers is because, for all intents and purposes, the attribute and skill ratings ARE the augmented ratings unless the skill tells you to roll the natural value, which it doesn't. (Because then augmentation wouldn't work.)
Also, an alternative reading (and a hilarious one) is that Social Modifiers refers only to modifiers coming from the table on page 131 -- as in, all other dice pool mods are still uncapped.
Like max says, the optional rule limits maximum dice pool to twice your natural attribute + skill. You can pump your Charisma all you want, but if it isn't natural, your dice cap isn't going to be lifted.Also, an alternative reading (and a hilarious one) is that Social Modifiers refers only to modifiers coming from the table on page 131 -- as in, all other dice pool mods are still uncapped.