Prophet isn't necessarily new either. It's "just" a linear model, with some specially-crafted features that work well for the specific problems that Facebook/Me

Prophet isn't necessarily new either. It's "just" a linear model, with some specially-crafted features that work well for the specific problems that Facebook/Meta had at the time when they built it. It's also not considered a good general default choice for time series forecasting, but that's another story.