I agree with the video. I don't think people are necessarily born with skill falling in their lap but rather the passion and inclination towards it. Like a muscle you can choose whether or not you want to develop it. When you have passion you are willing to spend the blood, sweat and tears for it. People look at me and think everything fell in my lap but I've been practicing for 30 years and was formally educated in art as well. I LOVE what I do and I have endured hardship for it. Some people really are wired for it and it comes more naturally to some but I do agree everyone CAN learn to draw. We were all kids once and kids are naturally creative.
Matt's comments about preconceived symbols are spot on. That's what they brought my attention to in art school!