I think it is hyperbolic actually, sorry. The so-called Alligator Alcatraz is definitely very inhumane, as well as being arguably a moral disgrace and an affront to basic decency. Aside from being a really tacky gimmick.
Packing people in literal cages and refusing to let others fully and freely inspect the facilities and living conditions is not befitting a country that claims to be modern, democratic and a respecter of human rights. Plus it's costing a lot of public money.
(Also reeks of hypocrisy given the recent events in Iran. Even Iran allowed nuclear inspections for years, not that these two things are related in other ways, of course.)
But it is not Auschwitz. Comparing it to that trivializes the Holocaust and I think it's an inappropriate comparison.
Call it a concentration camp, maybe. It's a camp, and people are concentrated there. Or an internment camp. The British did that in South Africa. (The British literally invented concentration camps, or at least popularized the concept.) POW camps did it. There are many examples and varying degrees of how brutal they were and how many people died.
More recently, the British (similarly very rightwing government) interned asylum seekers on a much smaller scale, putting them on a floating barge, which they later were forced to shut down due to outbreaks of Legionnaire's disease. Again, costing a lot of public money and facing widespread criticism.
But please don't compare it to a death camp where over 1 million people were systematically and deliberately murdered in one of the worst genocides of the 20th century. 🙏