Well, Tom Brady is not trying to pervert the distinction between men and women to the public, while hating on his own country and robbing real women of their own shot at stardom, plus he is a real celebrity. I'm not sure it would even be a different story if it were him.
As you say, the arms dealer trafficked millions in weapons. Not someone we want to just release casually.
Besides that, there is a PA teacher with the same story as Grinder who has been in a prison camp for years of 20g of weed, but nobody ever cared about that guy until this Grinder thing popped off. I'd rather have the teacher back, and I feel like that would be an easier deal to make here.
Grinder is not a friend to the USA and neither are the terrorist or the arms dealer, so I say keep them all locked up and all is well.