I think I'm still waiting on a single good 'people manager'

I've had plenty I got along with, but not one that has ever made my job easier

Best case, we all suffer together. Probable case: they build a promotion off my back

Note: not the one who received the assertion, but it's true. Bad managers abound

In fairness to them, there's only so much they can do in organizations that refuse to change where it 'counts'

I think it's still not optimistic for managers. Think that management is mostly necessary to deal with difficult devs. A team of good devs doesn't really need a manager.

And if AI replaces all the low tier devs, it follows the demand for management declines as well.