Shipping not well preserving crops from other side of the world is weird. But that doesn't mean it has to come from across the road. From massive vertical building.
I strongly disagree. If you think it's incidental, you make yourself a victim. You can see the campaigns by people like Thiel to promote nationalism and the power of the wealthy, and by groups like the Federalist Society and the very large neo-reactionary movement (my term).
Framing the debate and the 'mood' is the most powerful thing you can do, and many smart people know that and work hard at it. You can look up the research by people like the Heritage think tank, who develops talking points that frame the debates, and that eventually you hear people you know unwittingly repeating. Also, if you read HN you are aware of the grassroots disinformation campaigns by governments. Social media gives them much more power.