Without any context on the page, my first impression is this is presented as a tool for people to validate certain theories such as "could a balloon released from china at some recent time and date have actually blown into the US?"

As other comments have pointed out, the lack of ability to test with different altitudes makes the tool unfit for that purpose.

That leaves an open question of what the creator is hoping people will see in this. Is it a game or toy? Is it a technical experiment? Is it art? Does the maker not care what it is to us? (but, still, I'm curious what it is to the maker)