Whatever your feelings about ICE and this administration, there are probably some undercover folks in real danger at the moment. Probably doing some real work to stop some real abuses that you’d want them to stop. (Not saying all - but likely some / many to be in that program)
So - while I might agree that secretive domestic organizations like MI5 should not exist and sunlight is good for government, I feel for the families of the folks that might catch a bullet because of this.