Considering the military launched a nuke that would have wiped out the city, killing millions, I've never understood that "blame." Sokovia, yeah.
One thing that has surprised me is how the general public knows what happened in the various movies in fairly in depth detail. There may have been a cover story about the nuke in that it was launched with the intention Iron Man would take over its flight path. But other things, like what happened with Natasha--why would people know that level of detail?