Obviously, I don't know that person's mom, but I know mine and other moms, and I don't think it's a milquetoast conclusion that it's a combination of both. However, the former (as both a proxy and Musk himself) probably carries more weight. Most non-technical people's thoughts on AI aren't particularly nuanced or original.
Musk certainly doesn't help with anything. In my experience, a lot of people of my mom's generation are still sucking the Musk lollipop and are completely oblivious to Musk's history of lying to investors, failing to keep promises, taking credit for things he and his companies didn't invent, promoting an actual Ponzi scheme, claiming to be autistic, suggesting he knows more than anyone else, and so on. Even upon being informed, none of it ends up mattering because "he landed a rocket rightside up!!!"
So yeah, if Musk hawks some lame opinion on a thing like AI, tons of people will take that as an authoritative stance.