Mobile homes aren't great, but they beat a tent or a cardboard box. And they provide some stability compared to not having any tenant / property rights.
Also a cheap option that doesn't involve sharing walls. I looked into living in them because I have PTSD and hypervigilance + the lack of insulation in the buildings/apartments affordable to the poor = a living hell. And without addressing the PTSD, I couldn't have the fortitude for a job paying any better.
I rented one for a while and it was far better than 'not great'. Only downside really was the noise from the air circulator located inside, otherwise it was pretty much a normal 3 bed 2 bath small home.
Don't worry, I'm sure someone will come along and suggest we build $150,000 tiny houses, or shipping container houses. Mobile homes are just not cool enough for the bro who wants to save the homeless.