Suffice it to say, FTX and Sam-Bankman Fried are in a crisis that could threaten them being in prison, assuming fraud happened.
Here's the initial post to the FTX crisis:
So my question is, what should EAs do in response, and how can they avoid something like this happening again?
Absolutely never become involved with cryptocurrency in any way, shape, or form ever again. It's poison on every level. It's environmentally devastating. It enables crime. And, well, it's a Ponzi scheme.
A good read about crypto: https://www.currentaffairs.org/2022/05/why-this-computer-scientist-says-all-cryptocurrency-should-die-in-a-fire
Gold is valued way over and above its direct economic value for making things! It's valued primarily for being a store of value (as bitcoin is - hard to fake, divisible, transportable etc). Some people use bitcoin mining rigs to heat their home. I think that's pretty equivalent to using gold in electronics (i.e. useful economic work, but not the primary source of value).
I don't think any of the fundamental toxicity you mention regarding PoS or Ethereum is unique to crypto - it applies to most forms of capital (stocks, bonds, private equity, real estate).