I got my MBA while working full-time, having another remote contract job writing advertising copy, and completing a certificate program in another graduate school.
While in the program my long-term project was working on buying the company I where I was working. It was through the MBA that I realized, and forced the conversation with my boss, that I would never be able to buy it. The owner wasn't going to make the kind of deal that would allow this to happen, but had I not been in the program, I'd have stayed longer than I should have. Instead, I left and went back to the federal workforce in March, 2016.
I graduated in May, 2016, and in November of that year a job posting only available to recent grads came up on USA Jobs. I went from $44k while working a shift that ended t 1:00 AM to $57k working 6:30AM-3:00PM. A year later I got a built-in promotion making $69k. In the federal workforce an MBA can have value to hiring managers who value educated people, and there appear to be enough of them because I went from $44k in 2016 to $110k in 2022.
Obviously, being aggressive in applying for promotions made a difference for me, and it helps that so many people are leaving the workforce, but a piece of the puzzle is my MBA.