I think you're building a bit of a straw man. I think the criticism of MBAs rests on criticism of the idea that good decisions can be made by people that chiefly have "management skill" but lack "domain skill." A lot of people believe domain skill is extremely important, and if you stuff an organization full of empowered people who only have management skill, you'll get more bad decisions. You'll also get a lot of dysfunction as they spend too much time pursing the "management ideas" they're more comfortable with, and neglect "domain ideas."
This comment actually touches on some of these issues in detail: https://news.ycombinator.com/item?id=18179247
Obviously not. I think the critique is about MBAs who don't have domain experience and don't think they need it, because they have a generically-applicable "management skill." That ponderous specification is typically shortened to "MBAs" for brevity, since it apparently has some root in ideology that's common in business schools.
MBAs are used as straw man punching bags on HN. Anything that goes wrong with a company where there’s the perception that the “obvious technical solution” was ignored, is blamed on this nebulous cabal of MBAs, who are apparently hired in droves just to sabotage their employer. For some reason it’s totally ok to vaguely blame the business folks.