No No Don't crush it. As others have said, here in the rustbelt, I have seen them in far worse shape. I see a door on it with no rust at all. If you can afford to, just keep it or store it. Someone's gonna want parts if not the whole truck.
I am working on a GMC 370 with more rust than that ones got!
Once its crushed, its gone forever. Well to China first then back to us.