I disagree with that article...home ownership is something everyone should strive for. The home equity line is a huge security blanket for living in today's economy. Thats an additional $100-200K line of credit that you'll always have access to.
obviously...but what makes you think you'll be able to get that much, when most of your money is going towards rent? At least with home ownership, most of the money you pay, will go back in your pocket when you sell the house