You can add location information to your Tweets, such as your city or precise location, from the web and via third-party applications. You always have the option to delete your Tweet location history. Learn more
It looks like there is an alpha blending in order to smooth the edges. Therefore it could be that it’s not fake, but there still is a problem with numbers that do not match color.
You're thinking about the antialiasing on the edges. That isn't the problem, it would happen with any smooth downscaler. The problem is the numbers not matching the color (and being too exact, just 4 values).
