I live in one of the lowest income sections of my city. But the rent still isn't really cheap, it's $1200 for a one bedroom. This apartment complex is month-to-month. One month I didn't save and was waiting to get paid for my contract (payment promised on the 1st) to be able to make rent. I was short about $100 and they would not allow me to pay part of it. Three days after it was due, there was a notice on my door saying they would file for eviction or something with the court in three days. I didn't get paid for another two days so theoretically I was a day away from getting served for eviction when I paid my rent about a week late.
Recently I have been doing a better job of saving so I don't cut it close like that.
There is no severance or anything for most contracting jobs and if you are like me and have trouble saving much then the point is that it could be as little as a few weeks to become homeless. Like I said now I am saving at least to give myself a 30 day cushion but if I had any significant expense that would evaporate.
BTW, please no lectures about personal finance or other advice. The point of this comment is not to solicit that. The point is that it is even easier to become homeless than is depicted in that article.