factualize
When a bunch of people believe something is true, even if it's not. They just like the way it sounds.
The whole class believed the teacher when she said, 'This test is easy!' even though it had 50 questions.
Everyone at the party believed the DJ when he said, 'This is the best song ever!' even though it was the same song from 2012.
The whole town believed the mayor when he said, 'We’ll be rich in a year!' even though he had no money.