Passive investments wherein the investor takes zero interest in these investments are and have always been a terrible idea, and nothing in modern history has facilitated this more than index funds. When you give a friend of a friend $10,000 to start a company, do you just hand it over no questions asked and with no follow-up? Or do you try to get engaged with your investment? Make sure the CEO isn't sitting on his ass collecting a paycheck? Scrutinize it for potential frauds?
Well, that's what you do in an index fund. Except it's not even a friend of a friend that you're trusting. It's some group of people who likely live thousands of miles away who may or may not have an opiate or alcohol addiction or are complete sociopaths or are just regular humans who know how to legally take advantage of you when you aren't paying attention.
You want to know why CEO pay is so high? It's because CEOs have no accountability for raising their pay when investors aren't paying attention to what they're doing. You want to know why CEOs are taking short-term action to boost stock prices at the expense of long-term viability? It's because they care about the short, you care about the long, and you have no voice when you're in an index fund. You want to know why CEOs are issuing debt to do stock buybacks? To empire build by paying too much for their competitors? To play accounting games to boost short-term earnings?
Index funds are the tail that's wagging the dog, and they are going to be a disaster. And unlike derivatives, which can mess with stock prices but largely leave the fundamental structure of the company untouched, the dog that's being wagged here is the viability of globally important corporations that we depend on.
They were fine when 5% of the market just piggy backed onto the other passive (though attentive) investors. But now passive and inattentive investors are a massive proportion of the market.