My interpretation: As the country has entered the post-industrial era, holding a college degree has increasingly become a table-stakes credential for entering the white collar labor force. The higher education system has struggled or failed to grow to meet increased demand for these credentials, which both drives up the cost and increases selectivity of higher-ed institutions. A lot of people get burned by this and become locked out of and, crucially, geographically separated from labor markets that now constitute the majority of US GDP. This split causes non degree holders to view degree holders as their class enemies, and the universities as the class gateway that divides them.
[1] https://thebaffler.com/latest/one-elite-two-elites-red-elite...
True othering comes from people living in different worlds and hating the other person’s world.
[1] I did not read the the article but I’ve read this argument in a Graeber article.
Why has that shifted? Can we blame the university system and their "marketing" that has pushed a degree as the One True Way of leaving the working class? If so, that's an understandable reason to be anti-university.