These all went away by the late 60s in New York. They wouldn't be legal now. For one thing, buildings, or floors, were restricted to either men or women. And they didn't allow children, or more than one person/room. But they allowed people just getting started--working clearing tables, or washing dishes, etc--to be able to live near where they worked.
Annoying. I lived in a SRO (I just called it a studio apartment with a shared bathroom) for 3.5 years that was run by a co-op apartment building. This was in Seattle. Having a shared bathroom was an annoyance (shared between 4 men - never more than a sentence said to two of them) but I was more than happy to put up with it versus having to deal with roommates. It was also cheaper than having roommates in a variety of houses that I looked at. I had more space than all those rooms for rent I looked at. I often wish I could've kept that kind of housing when I moved to the bay area because everything here is so outlandishly expensive just to get your own bit of space and that housing was so cheap for me.
Second one was a former HoJo parked while awaiting condo conversion. Imagine a hotel room stripped of all furniture, with a single kitchen per floor. Had to wash my dishes in the bathtub, but otherwise it worked for me.
EDIT: just looked it up, xenophobia of course. New Yorkers didn't like immigrants living in Manhattan in 1955.
Basic human dignity? Being forced to share an intimate thing such as a bathroom with strangers or depending on strangers not eating your food/trashing your stuff or not being able to feed yourself because another person is cooking a 5-rounds-meal is not something that should be acceptable in a developed nation.
Why does a pod need a kitchen and bathroom? If it had those it'd be called a studio apartment. A pod is essentially anything from a dorm room styled apartment to a half-height room big enough to have a bed to sleep in and a shelf for a few items (like the Japanese have). In any of those cases you'd have communal kitchens and bathrooms. This would actually also be good socially because as we become more digitally immersed it provides a public area to meet new people, just like how it was in college.