That clip really does not “put her in her place.” Or anyone else.
The Marine may have plans to attend college after he leaves the Marine Corps. He may have plans to pursue an education while in the Marine Corps. The military doesn’t exactly satisfy itself with scraping the bottom of the intelligence barrel (as so many leftists love to claim). There are very good and intelligent people in the military.
Intelligence is just a measure of how likely one is to succeed in their chosen profession, career, or educational goals. Some very intelligent people choose not to (for example) get a PhD because of the demanding expectations of someone who has that level of education. They choose instead to just get a bachelor’s or master’s, where there are fewer expectations and they experience less stress in the workforce.
There are also many types of intelligence. Someone who is a top athlete in their field, like Babe Ruth or Jack Nicklaus, has a genius that few people can ever match. Yet they are not known for their intellectual achievements.
You do not get collage credit for it but you are constantly learning.