That's pretty weak, poorly informed stuff. The idea of Arabic being complex is just diverting from the fact that LLMs rely on phenomenally huge datasets. We have stupendous amounts of English text -- more than any other language, and more than could be read by a human in many lifetimes.
What she's talking about is not about actually proposing changes that make Arabic specifically better -- she's talking about a fundamental change in the entire architecture of systems... and in fact the abandonment of AI technology almost entirely.