Her motivations aren’t even as noble as that. The article goes on to describe how she’s actually just trying to undercut a proposed constitutional amendment:

But Ms. Bolick also railed against Planned Parenthood and Democratic support for abortion rights. She argued that her vote to repeal the 1864 ban could be Arizona’s best shot at curbing the momentum behind a proposed ballot measure to enshrine abortion protections in the state constitution.

For what it’s worth, the author (eventually) explains that by “AI doomer” they’re not talking about people who are generally skeptical or pessimistic about AI’s influence on society, but rather people who believe that AI will literally kill all humans:

“[T]here are plenty of people who do believe that AI either will or might kill all of humanity, and they take this idea very seriously. They don’t just think “AI could take our jobs” or “AI could accidentally cause a big disaster” or “AI will be bad for the environment/capitalism/copyright/etc”. They think that AI is advancing so fast that pretty soon we’re going to create a godlike artificial intelligence which will really, truly kill every single human on the planet in service of some inscrutable AI goal. […] They would likely call themselves something like ‘AI Safety Advocates’. A less flattering and more accurate name would be ‘AI Doomers’.”

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The actual headline says “tens of thousands,” but it’s certainly funnier this way.