No shit. Weather prediction is one of the oldest applications of all forms of statistics, including machine learning. We've been using ML techniques to predict the weather for a long time.
Yea but not rlly. This vid was in reference to this. First we had to do actual physics sims which required supercomputers n stuff. These models reduced the required resources for weather forecasting by thousands of times. Please watch the vid before telling me that it is dumb.
That Google repo didn't invent using ML/AI for climate/weather modelling. I work with scientists who have been doing that sort of modelling their entire careers.