I just love the implied racism here where America is capable of running intelligence disinformation campaigns while dirty Iranians could never be so clever. That's why every statistic that comes out of western media sources can't be trusted, but everything else can.
Beyond that obvious confirmation bias, there is almost no difference in how populations react to news of a few thousand deaths and thirty thousand deaths. Humans just don't process big numbers that well on an emotional level. Intelligence organizations know that. Thirty deaths can easily have more of an impact because we can imagine it being 30 people we know.
Why would legal eagle report on cases where Ice complies? That would make some pretty boring content.
The numbers I can find for compliance failures are between 4k and 5k. That is a lot, but not in the context of the 3m+ deportations that Trump's ICE has done.
I'm not trying to defend ICE here. Anything less than 100% compliance should result in prosecutions. I just don't want to promote the false notion that legal action is useless.