Conservatives, being the smart, forward-looking people they are decided that it would be much more practical if their sons went into business and didn't waste time in the arts or journalism or that other silly nonsense.
All of the children of all of the conservatives went into practical fields of study such as business, medicine, law, engineering, etc.
That left the humanities and journalism to the lefties.
Also, it used to be that people had to pay for an education. Now they can get grants, loans, etc. The only people that could afford to get an impractical degree such as English or Art were the sons and daughters of the wealthy, i.e. nominally conservative folks. But now anyone can get a degree in English or Art.
So the conservatives have basically left the cultural field and now wonder why their culture has left them.
I agree 100% with your analysis. Will add one thing. The Marxists/Socialists
decided decades ago that their road to overthrowing our Republic would be through our schools. I just don’t mean the universities. They now control the minds of our children from kindergarten age through college. Most parents
are completely oblivious of what has happened. Our Press knows and are
for the most part OK with it.