I get your point but in NZ and Aus we have strict certifications for people who carry out electrical and plumbing work so if you don’t have some formal qualification in them you would have no chance of practicing unless you did an apprenticeship and then that puts you at virtually the same level as a kid out of high school. Obviously all people are inherently valuable but it’s more about if you’re valuable from an economic point of view. Points based systems are arguably superior because they are quite transparent and offer multiple ways to meet the requirements.