It appears to me that ICE has orders to get people every day.It does not matter who or where.
ICE is to stay away from anyone who is a danger to ICE.

Years ago, I went on a three day cruise out of Florida.

I interacted with the Filipino workers and talked with them.
(I always like to interact with the people in my environment and get to know them.)

I found them polite and well mannered to a fault.
Devoted family men who sent their paychecks back home.
Hard workers who did everything perfectly.
They were kind of a force of nature.

They are hard-working, generally good-natured reliable people, and the only reason to pull a counterproductive stunt like this is to fill a quota. If their papers were in order, then the actions of the ICE contractors were not. The government-hired thugs can be glad that a cruise ship’s crew would never be as well-armed as they are, because if Noem’s thugs had—as usual—no documented legitimatization on them, they are the ones committing the felony, and they crew would have had every right to defend themselves with all means at their disposal.

Not about the "backbone of the cruise industry". That part is clearly true

But cruise ships are foreign-flagged vessels (with the exception of one NCL ship in Hawaii). CBP can board them at any time in US ports.

The accusations appear to imply a CP ring… which would be a good enough reason to me… but no evidence (let alone charges or convictions) has been offered to back up the claim.

They were legally employed with visas by a big corporation. Isn’t anyone willing to stand up to this cruelty?

...that Carnival has already fired them.