Hi Felipe, I think it is because level 1 is so very low, like someone in high school. So it is a person how knows how to prepare documents and spreadsheets, adn would find programming too difficult.
We build skills and knowledge over time, but it is not until you attain a threshold level that you will be regarded as a professional. As the video clearly states, until your practice reaches a professional level, your practice wont be recognised. Programming starts at SFIA 2.