They don't seem to be dunking.

The title of the the piece/submission would be well served by calling it a simulated radar. I, like I suspect many others, clicked on it because I was honestly intrigued by the concept of some sort of homebrew radar. Setting that bar and then seeing that it's some API results plotted on a simulated radar screen is a bit of a letdown.

Submission is clickbait. It's a cool project, sounds like fun and I'm sure their kid likes it, but the root post is not wrong.