He's a high level technical fellow as far as I know but he's also 83. I suspect his involvement these days, if any, is purely advisory to a limited group of core NT kernel and RDOS engineers.

Yeah, I agree, it's probably high level or retirement.

The last article I read about him implied that he’s intent on working and that working with him was… intense. But that was a few years ago.

I like to imagine there’s an inner sanctum in a secure sub-basement of Microsoft where a couple dozen cracked kernel developers work quietly… except when Dave Cutler asks them to come into his personal lab through the three foot thick blast doors and man-trap so he can yell at them about a bug he found.