Prophet is not my favorite time series forecasting package. I agree with the author’s findings.

Microprediction.com (the site that wrote this article) is a great place to win monthly cash prizes for actually providing forecast accuracy, the twist is you have to provide your forecast as a sample of 225 points from a forecast distribution rather than just providing a point forecast. This makes participation “interesting”.

Also to win you have to be more accurate than everything and everyone else that is providing predictions.