Just because a handful of B (at best) list celebrities are involved? I don’t think so. They know damn well the public is sick of being screwed over by the rich man/woman, and this is a chance to play into that.
But when you get into wealth and politics, they’re a whole lot less eager to tell it like it is. How often does the wealth of Congress - and therefore the fact that a large majority thereof, especially in the Senate, from both parties, have little incentive to really change a status quo that has been very good for them - make big headlines? And that affects most people’s lives a lot more than who gets into Stanford or Yale.
Of course plenty of people are giving the plutocracy the attention it deserves, on progressive websites and in books. (Here's a relevant item I happen to have ready to hand.) But those are still not where most people get their information.