What will they gain by creating fear? These guys are billionaires who got their wealth from their own businesses, I don't think they need to cook up some fake story just to steal money.
There intention to warn the public may be genuine so that people don't get cut up unexpectedly. After all, they have enough money not to worry about recession, they can afford a wealthy life in any economic situation.
If they don't care they won't be warning people to be on the look out, they can easily ignore and enjoy their wealth.