Why scale matters more than usual
Because SVG is vector, output quality is limited only by the size you ask for. Rendering at 1× gives a crisp result for a web page; 2× is the safe choice for retina displays; 4× or higher is what you need for print or a large-format banner. Because the browser re-renders the vector at the target size rather than scaling a low-resolution bitmap, edges stay mathematically smooth at every dimension — there is no "high resolution PNG" concept for vector input.