Not sure which ones you're referencing, but if its about the Alabama unionization effort, it's extra hilarious. He made such a show to say that Amazon pays its workers $15/hr, but what he didn't say was that he treats his employees so poorly that they couldn't hire anybody to work for anything less than $15/hr, which was already 30% higher than market prices in the warehouse fulfillment industry. He was the reason that they were paying $15/hr, and he was bragging about it like it wasn't one of his biggest failures as a wannabe cutthroat businessman.
Too many people forget the pissing in Coke bottles fiascos.
Also, people forget how bad workplace conditions can get, i.e., when Carnegie's Pinkerton snipers opened fire on Homestead union steel workers in the massacre of 1892.
The US middle-class had it best post-War when unions were strong between 1947 and 1965. Now, there is about an 1930's-level of unionization that is declining without any floor in sight.
Socialism in the US is a distant memory of its former self.