Because they have worthless degrees.
I got my MA in Modern European History intending to teach. I decided to enlist in the Army. Spent 20 years there going from private to captain and then used my degree by becoming a civilian historian and archivist for the US Army for the next 22 years.
I’m satisfied with my decision to enlist, especially with what the teacher unions demand of its members. Unfortunately, I now see the country as taken over by fifth column socialist/communists, that I spent the Cold War defending this nation from via the USSR/Warsaw Pact.
Frustration breeds radicalism.
“Mamma don’t let your babies grow to up to get Stupid Studies Degrees”