By other accomodations I’m guessing you mean the supervised tents by the charities? Similar to the homeless under the overpasses in the USA perhaps. Have to live by rules, people in authority know who you are (and can arrest you or ship you out?), etc.
That is one of the reasons the liberals give for making the illegals in the USA legal. “Now they live in fear of I.C.E. and will not go to the authorities if they are treated poorly at work or by their husbands. They won’t get medical treatment, etc.” (Funny, they aren’t shy when it comes to getting their welfare check!)
It's a game of political chicken that's being played out right now. The organizers are telling the illiterate squatters that the new DemocRAT majority in Congress is their salvation (they don't know any better - they come from corrupt governments, so they're easily convinced that the DemocRATs will defeat "El Trump" and change things for their benefit).
¡You only have to wait until January! ¡Señora Pelosi will save you!
Will it work? We'll see.