Would the article have been published if the author found evidence to the contrary?
The writer is an Economics major, not one of the softer social sciences. According to a 2010 study[1] (yeah, yeah boy have things changed since then!), the more economics classes one takes, the more likely they are to lean Republican.
So would someone in a field that is split evenly between conservative and liberal viewpoints publish a paper with findings that suggest the conservative viewpoint is correct? Yes, don’t be silly, it clearly happens all the time. No reason to get conspiratorial here.
[1] https://www.newyorkfed.org/medialibrary/media/research/staff...
People can have careers ruined by a tweet; self-published article under your own name is in no way free from constraints.