Is this from a fancy school? Most MBAs I know are working jobs that have nothing to do with their MBA, making less than $50,000. The only people who benefited from it are guys who did engineering + MBA.

You can say that about most degrees, though. I know plenty of advertising degrees who are waiting tables. I know plenty of CS grads who are stocking shelves. I know mechanical engineers who deliver pizza. I know people with just high school diplomas who make six figures in the Midwest (a lot of money for a cheap area of the country).

No degree guarantees you a job, there's always work and ambition and a lot of luck and timing that factor into anyone's career success.

I'm not sure if it's to the same degree as law degrees, but there's definitely a strong element of credential value from top schools. The conventional wisdom for law degrees is that, if you can't get into a top school, most people shouldn't bother. That's probably at least somewhat true with MBAs as well.

Many people go to law school for reasons other than working in BigLaw wasting their lives away in an office. For example, a great number of lawyers (and budding law school students) work for (or want to work for) for smaller firms, or in-house at companies, or at non-profits, and go home in the evenings to their friends and families.

But yes, if you plan to go to law school solely because you want to make money, it's not worth it unless you go to a top school or graduate at the literal top of your class.

There is a pretty strong power law in effect for the ROI on an MBA depending on the strength of the school. https://gmatclub.com/forum/value-of-a-top-10-mba-213365.html

People making crazy 20+ million a year salaries boosts the average quite a bit. But, yea the median change in salary is much worse than the average change in salary.

What roles did those people end up having after the MBA?

That seems low especially since a run of the mill b-school undergrads from Big Ten schools have average salaries in the 50ks.