Earlier quoted context omitted.
Your advice might be okay for good times (investing, buying land, houses). But in hard economic times, the global economy will be doing badly and therefore most investments will too, even housing (see 2008). Going into debt that you then invest is doubly risky: you have debt, plus you have a risky investment. Saving cash is actually indeed the best way to prepare for hard times.
I apologize for being blunt, but you have it backwards. A the adage goes: buy low sell high. In what people equate with "good economic times," prices are high, but in hard economic times everything is on sale! That said, firstly and foremost we should all make sure to have enough savings to ride out hard economic times—including personal ones. That is, enough to pay our monthly expenses for a year or so, in case we b…
In sufficiently hard economic times, everything is on sale because no one has any idea what will still be around tomorrow and what is going to drop to zero.