It's their graphic. They published it and use it. If others see a different meaning that is not a "conspiracy." It's irony.
After all the Dem claims about racist “dog whistles” in Trump messaging, are we going to stoop to the same level? Even if there’s truth to this “Death to America” claim (which I doubt), there’s no way to prove it, there is an easy alternative explanation, and we will just be portrayed as fools for believing another “right-wing conspiracy theory.”