Resumes probably don't matter at that level. From my own observations, executives are all hired through a buddy system. Someone always worked with someone else, or went to school with that person or was a neighbor or something. For startups that I have worked for, CEO selection was made by recommendations from the board. (Either the founder CEO is kept, or the founder is used as a promotional tool and sidestepped to a different role.)
I personally have never seen an exec get hired via the standard process of recruiters or resume submissions. It's not to say that doesn't happen though. Us commoners are usually removed from that process.
Trump supporters generally don't ask those kind of questions of themselves. Like Trump, they like to pretend they're always endlessly self-assured in their thoughts and actions, but that couldn't be further from the truth.
People shocked that she's a fucking garbage CEO just didn't know about her past as a garbage head of a department.
I'm serious about the Trump supporting thing, too. She's a Trump supporter. The fucking stupidity and doubling down on said stupidity is required for that.