The video is just dumb. She mentions Marx, and fails to even understand that the whole academic concept of Capitalism actually derives from his work and instead acts like Capitalism is just a basic term for an economic system that uses an exchange medium.
She's good with physics, but holy shit does this make her look bad. She needs to actually read something about this topic before opening her mouth.
The whole video is just capitalism == money and buying a banana with money is easier than buying it with the products of your labor. Which again just comes off as incredibly uninformed because that whole argument is addressed and picked apart in the first chapter of Capital.