Took a study about MIT graduates: some stayed doing research after graduation and others went into finance. So yes not all MIT graduates go into finance. Misleading and inaccurate study of MIT students and what finance is and whatever "really smart" might mean.
Article says zero about job(s) that smart people avoid.
Whatever smart people are doing they are not at the Washington Post. But their boss Jeffy Bezos is a Wall St guy, and smart. His strategy of turning the WashPo into the HuffPo Insider but with a better rolodex and even less ethics seems to be going solid from a biz standpoint.