Managers oversee and direct the people who do the nutsy-boltsy work?

What a non-shock!

Michael Dell probably hasn't built a computer in some 35 years! Tim Cook hasn't built an iPhone in ... probably never. CEOs give companies strategic direction and organize resources necessary for their strategy. Michael Dell and Tim Cook don't build product (possibly excepting dog-and-pony demos), but they have a lot to do with Dell's and Apple's ongoing success! Or in the case of former HP CEO Carly Fiorina's poor strategic decisions, HP's decay.
Similarly, President Trump didn't/doesn't develop and test the various Covid-19 treatments and vaccines, but people are getting treated and several vaccines are well into the testing process, threatening to expose the falseness of Biden's and the Dems'
Trump has done nothing narrative,

.