Judging by the photos the conditions on that barge are better then on a Royal Navy destroyer. They have a gym, tv, wifi, canteen and can come and go as they please but are advised to return by 2300.
In my book they are doing ok. JV on radio 2 had a text from a single mum, no hot water, no repairs by housing authority, mould etc and asking if she could please have a space on the barge.
They are illegal immigrants, they are not being tortured, or threatened with beheading, they are being accomodated in reasonable conditions. If they dont like it then go back home.
All immigrants should apply in their home country same as the good old USA system.