Considering what we sold a lot of gold for (sore subject with me!) not too very many years ago and then had to start building again with prices four times or more higher, I can't see that I'd call it weak. I've known gold to always be strong.... sure, with fluctuating prices, but the downs always head back up soon enough.
I agree, Dalio is a legendary investor. For those interested in learning more about how Ray Dalio thinks read Principles by Ray Dalio. He wrote it for staff at his Hedge Fund, Bridgewater Associates.
Gold will always have value. It holds its position in the market pretty well. It's never going to outpace the market, or under perform, which makes it as close to a good long term sure thing as it gets.