No, he wasn't mistaken. It just shows that when one follows fake news, they become the sheeple that just repeat what they hear.
As far as economic screw up: I'd point to the most talked about item: the $12 Billion bailout to farmers. (https://www.reuters.com/article/us-usa-trade-farmers/trump-wants-12-billion-in-aid-to-u-s-farmers-suffering-from-trade-war-idUSKBN1KE1YE) His lack of planning shows in that was the first thing he had to do after his tariff policy was announced. Where will that money come from? Most likely those areas with high populations, like California, and in particular, Los Angeles.
Harley-Davidson has already upped production in their foreign facilities because the EU put a 31% tariff on US Imports.
Mid-Continent Nail, America’s largest nail manufacturer, laid off 60 workers immediately because of the tariffs, and are in danger of closing their doors by labor day.
Pretty much, every business that uses steel is affected. Brinly-Hardy, a company that has been in business since 1839, just laid off 75 workers because the price of American steel, something they've always used, went up 33%.
The ones hardest hit will be the small to medium sized manufacturers, as they usually can't just shift production to an overseas facility like Harley did. But they aren't the only ones concerned. Large companies are also worried.
Whirlpool, Caterpiller, and even Coca Cola say that they're going to need to raise prices because of this trade war. The US Chamber of Commerce, as well as the farmers that voted for Trump, want the trade war to cease.
He tried hitting other countries with tariffs like a bully would hit a 90 pound weakling. He didn't realize that the 90 pound weakling was a black belt in Kung Fu.
