Either way, it's extremely difficult for younger people to be in CxO positions unless they start a company. I'm extremely doubtful that most can't do the job, it's just that they can't get hired.
I'm sure this person will do just as good of a job as any 50+ yo with an extra decade or two of experience. Typically people that require 10+ years of experience to perform a job are worse off than someone that is capable after only 4-5years. Lots of dumb-fuck boomers out there that had to be spoon fed every iota of information before they could perform at a high level.