You must remember that her message isn't for people with Autism, it's for their parents, family members and care givers - primarily it's for Moms. And her style will appeal to many young Moms just starting this journey with young children:
She is not old but she's probably older than they are.
She's not stuffy and formal (and what you see as aggressive, Vector, probably wouldn't be seen that way by an NT. Forceful and strong, yes, but that may be what they are looking for - someone to "tell" them what to do and help relieve their feelings of despair and fear).
She is embracing technology to spread her message.
She is not preaching, she offers hope.
And some people, no matter what their challenge or issue, do respond to holistic therapies. And some don't. There is no one right answer.
Just my perspective as the mother of someone with Autism.