What stands out to me about the people in the article is that they don't seem to be poor in the conventional sense. The woman who sold her 5 bedroom / 3 bathroom house and the guy getting 3k/month in pensions.
I don't hail from the US but wouldn't it be possible for people like that to move to one of the low cost states and rent a modest apartment? I have a friend in Tulsa and I think he pays something like 750 bucks per month for what looked like a pretty nice flat, seems possibly cheaper than this:
"When the family is unable to afford a spot at a campground, which can cost $25 to $45 a night[...]"
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