> In my last performance review, my manager was actually surprised when I told him that I am now more a manager of my own work than actually doing the work.

I think this is very telling. Unless you have a good manager who is paying attention, a lot of them are clueless and just see the hype of 10x ing your developers and don't care about the nuance of (as they say) all the surrounding bits to writing code. And unfortunately, they just repeat this to the people above them, who also read the hype and just see $$ of reducing headcount. (sorry, venting a little)