While the actual club business aspect of this show isn't unusual for 1% outlaw MC's, the old lady aspect is totally misconstrued to an extent. Old ladies absolutely do not have their hands in things the way SAMCRO's do. I don't think it's unreasonable for a professional woman to be the old lady of a member of an MC. It's really not a maturity level thing.
That aside, the irony of Jax's accent coming through is that in the post finale interview he said he thought his accent got better as the show progressed.
ETA: I'm not offended it's just that show gives some major misconception for those that have never been exposed to the MC community.