The methods that Morendil is discussing here are pretty general forecasting techniques, not limited to a particular domain. Some skills are worth developing, even if you're practicing them in domains you don't care about.

Personal example: I was a bio major in college, and I found it very difficult to care about organic chemistry, because we were mostly learning about chemicals that had no biological relevance. Consequently, I didn't learn it very well, which came back to bite me pretty hard when I took biochemistry.