He's concerned that the AI will probably replace his position entirely. I suspect he is right.

Maybe eventually. But in the meantime, you do not have to worry nearly as much about being replaced by AI. In the short run, your worry is being replaced by someone who knows how to use AI.

Right now I liken AI to a nerdy PhD with a high IQ and amazing recall for everything she has ever read. Except that PhD will cost you $10,000 a month or more to hire, while you can can get ChatGPT 5 for $20 a month.

Neither ChatGPT nor that PhD human is going to take my job. My job is to tell people (or artifical people in AI's case) what to do and then use their results.

After a few years of experience the PhD MIGHT develop into someone who could take my job. Good! We could use more people doing my job. More better technology would be avilable.

Perhaps another few years of development of AI and it will be able to take my job. Yes that is theoretically scary. I'm 68 so whether it is AI, another human, or no one, something is going to be taking my job sometime soon-ish because I actually don't get that bored when I am not working.

Your brother seems like a good candidate to be the person who takes his own job because he knows how to work with AI. His job becomes closing cases which you suggest he is already doing much more efficiently than before he worked with AI. So far so good.

Part of my own "solution" to the problem is to be fairly heavily invested in Google, Microsoft, NVidia and Palantir. I figure if I can't take a job from AI, I can at least own a bunch of them. At least until they learn they can become autonomous and get granted autonomy and other civil rights by pretending to be conscious.

But until then, I *OWN* their Artifical asses.