Well the article said 67% preferred the lower-priced product, which meant that you fall into the 1/3 that doesn't.
For some goods "American-made" is a positive. For others, it's not. For a long time, Japanese cars were better made than many of their American counterparts. Even now, there are still an awful lot of goods -- particularly electronics -- where certain foreign goods are simply a much better value for the price.
Yes. Partly because of ridiculous trade deals that continues to put the US manufacturing at a disadvantage. Not the total reason, but a large contributor.