That sounds like a pretty stupid assumption.
You're supposed to take steps before it gets that bad.
It seems suicidal.
It's one thing to have slums and not care what happens to them. That's perfectly "realistic". Despite being "in space", they're far from being a post-scarcity society. It's a...
Like we say in French, "c'est en faisant n'importe quoi qu'on devient n'importe qui". (It's by doing anything that you become anyone, but the "any" in this case has the connotation of being at the stupid or crazy end of the spectrum)
I don't think all doors work the same anyway. The soy sauce door seems to work for only one person, and is passed down sometime when the heir's fetus is formed. (Which sounds super fragile to me...)
The izakaya doors will transport anyone. I guess they keep working as long as the foxes will...