If you consider the constraint that the indie programmer may have had incomplete skills to set up a proper service, saw this method as faster for any number of other reasons, or didn't want to maintain a proper web service, I think this could very well have been the right approach at the time. Judging from how much money this game has made, I think that's hard to argue with since time to market should have been the number 1 concern at the time and early on he needed a way to make sure people were able to complete all the levels and measure the difficulty curve.
When the developer responded that it didn't matter, that may have been because they don't need that data any more and don't even look at it.