The video presented a human's instinctive attraction towards certain features. The Venus of Willindorf was made with what they valued most in mind. The Seagull's instinctive action towards the stick with 3 stripes simply states that if their brains were programed to react to that stimulant, then it was perhaps possible for primitive humans 30,000 years ago. Not all artists work towards realistic art despite it being "the most difficult to make" so "lacking the skill" may be inappropriate.