> They were foolish to vote for the kind of person who left them jobless.
What 'kind' of person are you referring to? I think you might be over-generalizing. Trump has long been opposed to outsourcing American jobs, reportedly.
In any case, we should differentiate between the actions of individual business owners, and the policy that establishes the playing field. For example, current US corporate tax policy creates a strong incentive for many businesses to keep their cash overseas, and not repatriate it and pay the tax. You can criticize each individual company that operates in this way, such as Apple, but if you want to fix the problem, you need to look to policy solutions like changing the tax law.
A person can be in favor of changing policy even while they optimize within the current policy framework. For example: a wealthy person might be in favor of a tax on the wealthy even as they personally employ all available techniques to reduce their tax burden; there is no contradiction. No rational citizen will pay higher tax than the code obligates.
Criticizing individuals who optimize their actions within the current policy framework isn't productive. We should expect everyone to operate according to the current policies, laws, and incentives -- and if we don't like those, then we should change them through the political process.
So even if you consider Trump as somehow in the same category as company owners who ship jobs overseas, the point that you shouldn't overlook Trump's stated policy objective to create jobs in the US and remove the incentives to ship them overseas.