Let's talk about STEM majors. Most fields have a fucking crazy funnel effect that nobody warns applicants about. Case in point: many of my high school friends who got BSc's in bio fields - microbiology, genetics, marine biology, etc. - which have a large undergrad intake and accept people with good but not exceptional marks. Problem is, there's maybe one honours place for every 10-15 graduates, and masters places are even scarcer, so if you aren't top of your class, you aren't doing postgrad. And if you don't do postgrad, you're underqualified for the jobs that want university education, but also overqualified/not correctly qualified to be a lab tech.

So what the fuck do you do? If you can afford to spend another two years studying while earning fuck all, you can train to become a high school teacher (and then still barely afford to live because teachers are criminally underpaid) or else you're basically stuck in some shitty middle management job using none of your skills at a company that has '-lab' or 'path-' in the name, maybe.

Engineering and computer science still have decent employment prospects after undergrad, but engineering programmes are relatively tiny and good luck getting a place if you aren't like top 5 in your school.

TL;DR: the whole "well maybe if you didn't major in postmodern decolonial basket-weaving..." line is utter bullshit because the majority of STEM grads are just as utterly fucked on today's economy.