I am sure he is using your program. So have I, although I have provided a link to it if not in the same comment, at least within the thread. I think the data shows clearly that with no marketing or real effort, and just social media "buzz" that Tesla can sell pretty much as many used Model S as it cares to below $60k and maybe below $70k. I thing the demand for Model 3 is probably hard to measure, but is pretty huge.
Interesting that the author takes the same data (which "coincidently" starts when yours does) and draws the opposite conclusion.
The other thing he is missing is the number of people waiting on the sidelines until the supercharger network is more built out, and the number of people who have already decided on Model S and Model X, but are waiting for their lease to end or some other event in their car ownership cycle to occur.
If Tesla has any problem in the intermediate term, it is the strong US Dollar and the potential impact that has on foreign sales and/or margins on foreign sales.