This is true. I once had a boss with an MBA. I am highly skilled, had a decade under my belt at the company. She once almost laid me off one year because her and another middle manager thought I didn't "fit with the team" any more.

Turns out I was just going through a divorce, was deeply depressed, and simply getting shit done and going home.

She knew but that MBA mentality just saw that I wasn't joining extra calls, putting in extra hours, volunteering to manage projects, etc. It wasn't even about department or company performance, we were in some of our best years ever. I discovered this years later after she was laid off, probably under similar circumstances. Fuck MBAs.