At the very least, it's apparent that SBF sees crypto as being heavily based on speculation that's disconnected from any actual value proposition, but he's choosing to exploit and profit from those systems. And it's now apparent that he also was engaging in speculation with user funds himself via Alameda.
A wild-eyed crypto believer might lose anywhere from a few thousand to a few million of their own money in poorly placed speculation.
A sophisticated market-maker will facilitate the loss of billions (about $10 billion in this case) from numerous people.
Which is more dangerous? A HODL who loses their savings on some speculative crypto purchase, or the next Bernie Madoff?