Good because brilliant engineering types who would have been "Quants" on Wall Street will go and be actual brilliant engineers.
Possibly bad because these Harvard MBAs (and their ilk) haven't magically become passionate about technology. They are simply following the money. So, we'll have more of "that kind" of people in tech.
Not to say there are no talented, technically savvy elite MBAs who do care about tech. I know some of them. But plenty more may just be mercenary types, going where the money goes.