Comment by lpcvoid

>They (everyone) are not forced to buy it. They’re buying it on the hype.

I think you may not understand the problem. As noted, unmanaged/passive index funds invest using market capitalization as a metric. And anybody who is invested in these ETFs thus unknowingly buy into these astronomically overhyped companies, and once these company valuations fall (and they will), pension funds/IRAs/401k will be the bagholders.