Yeah, but also this is nothing new.

In a recent Planet Money episode (#688: Brilliant vs. Boring), they talk about how when John Bogle first introduced the index mutual fund in 1975, it got a lot of criticism (and not much adoption) with people claiming that they were "un-american" and "Bogle's folly".

It's possible that there's some sort of concentrated media push going on here, but the story hasn't changed much in the last 40 years. And I would hope that if people with a lot of money were trying to smear index funds, they'd at least come up with a new angle.