The site you're linking to is talking about visible starlink satellites, not starlink coverage. Starlink is definitely available at that latitude (in the sense

The site you're linking to is talking about visible starlink satellites, not starlink coverage. Starlink is definitely available at that latitude (in the sense that there is signal, not in the sense that SpaceX is currently taking customers or has set up base stations), in the southern hemisphere the only significant landmass that doesn't have more or less constant coverage is Antarctica. Back when coverage was more spotty, I made this map. I'd probably change some things if I revisited it now that there are lots of satellites up, but it's good enough for demonstrating the point: https://droid.cafe/starlink https://droid.cafe/starlink