Fair point, and you are right. The demo starts solved because its only job is to show how one move works: nothing turns here, bands of stickers slide. The goal is the classic one, one color per face. The page does not say that and it should. I will fix the text. If you want to actually try solving in the browser, here is a scrambled state:

https://skimmiq.com/s/?alg=D1-1%2CR3-1%2CR3-1%2CD1-1%2CD2%2B...