Google Fonts compiles specific given sizes and weights into a simpler and smaller file, I think. It would maybe be harder to give values to some variables whil

Google Fonts compiles specific given sizes and weights into a simpler and smaller file, I think. It would maybe be harder to give values to some variables while keeping others, but I don't think it should be and anyway just instantiating all variables solves most use cases. It's like SVGs except smaller (binary format) and in a format that text rendering systems know how to work with.