What real-world expertise does Lucas bring to this issue?

If he had somehow been able to foresee how developments in computer tech would play out in our society over the past couple decades, he'd easily be a multi-trillionaire from having bought the right stocks early.

This is honestly kind of accurate accidentally. The Luddites were a movement trying to stop the exploitation of labor to work in dangerous factories which was destroying the health of large groups of people for the sole benefit of factory owners. The underlying problem isn't the AI, or the factories. It's the anti-social actions of rich sociopaths.

A lack of trust in corporations and the ultra-wealthy who own these models is only natural. Especially considering the use of AI has so far been less than ethical. (Targeting decisions for air strikes, surveillance, blatant IP theft, fraud, etc...)