I also found that extremely weird. I'm a scientist, or at least I got a STEM PhD before I quit, and I often think about how indeed correlation does not imply causation, and how a lot of science (or the media reporting thereof) seems to think the opposite. I wouldn't use it myself because it sounds a little cliched, but I would be pleased to hear someone utter the phrase. Although it may often be accompanied by some questionable beliefs (it's 2024, we all have them), it indicates that someone has given some kind of thought to something.