These remind me of the post-1906 earthquake shacks](https://sf.curbed.com/2017/4/18/15333168/sf-quake-shack-houses-camps). Better built attached housing would likely let people live better at a similar, if they could manage to agree on reasonable rules about living just a bit closer.
This looks exactly like what some urbanists have complained about, a lack of “missing middle” housing between apartments and large single family dwellings. Sounds good with me.