I was mostly making a reference to SBF, but sure, certainly there are large scale projects that require boring bureaucratic knowledge. But I am assuming that the audience of the post is not people that want to build a career in policy. Because if that’s the case, this advice is a little too obvious - of course you should become an expert in X thing if you want to build a career in X field.

More generally though, my claim is just that solutions tend to be better when they are implemented locally and pragmatically, and not when thought of as abstract problems that can be solved by study and thought.