This particular map is fairly far out of date. It is actually not strictly official or curated/made by Dane. It appears that the crafty soul in question actually compiled publicly available data back in 2017 and then moved on to other projects.
We don't actually have publicly available maps of the current deployment. You can check your address at https://sonic.com/availability
to see if there has been any change in availability, we do not have any concrete plans for our Fiber expansion and are taking it one step at a time. This isn't to say that we won't expand to your area, just that we have not disclosed publicly if and when we will be able to.