I've not read the article but there is literally heaps of people like her buy, borrow against max leverage life's good when the markets rising.
Depends what your buying to people forget there's a few types of 'investing' you can buy something with low risk good return but low capital gain expectation but solid revenue stream or buy something with the hope of high gains future development etc
I prefer low risk revenue stream properties if it was my money, or commercial property.