Diamond didn't know how big the impact that post would be, but all she knew was that at least for now, letting people be aware of what might be happening in the country which would affect them badly, was for the best.
Droughts were the scariest, although the country would definitely have some food to distribute to the citizens. What she feared was the black-bellied businessmen who didn't care about the people and only cared for profits.
Such people, she couldn't stand them at all and thought of how much would have to suffer for those people to be happy. Her heart ached so much. That was why she didn't hesitate to share the post. With millions of people following her, there would be an impact.
Whether it was bad or good, at least something would happen, which was what she wanted.
As for the government, what does she have to do with them for her to be worried about them? She was just a rich young lady with nothing much to do.