The absolutely massive disconnect between economists and the average person is staggering. There's only one word to describe the attitudes of these economic experts: hubris.
Look, it's great that the economic numbers are so good right now, but ours is not an economy of numbers, it's an economy of people. If the people do not think the economy is doing well, it's not doing well, the numbers be damned. GDP, the stock market, average wealth and income, they don't matter. What matters is how people feel, and large numbers of Americans don't feel great about the economy. That's simply the fact of the matter, and tough shit to any economists who doesn't like it.
Your post is a prime example of why people think the economy has problems. It's entirely psychological and propaganda driven. The whining has gotten so loud, that everyone thinks it's reality.
Just to make sure I understand, you're saying that the 45% of respondents who said they think the state of the economy is poor, did so not because of their lived experience, personal financial condition, employment prospects, etc, but because they've been hypnotized by propaganda into thinking they're doing poorly even though they are actually doing well? Is that what you're saying?