Yeah, in the same way people might understand how MLM's work but don't need to explicitly agree to take part in the less savory aspects of why it might be lucrative. You can understand the game and play it with other actors without any set of well defined rules, as long as you're all working towards relatively the same outcome and you all have the same assets that need to be treated in a particular way to get that outcome ("I'll get mine").

But, I don't think that's sufficient to explain what's been happening in cryptocurrency markets. There's a reason analogous regulations exist in Real (TM) trading. As it stands, it's too easy for bigger (or sufficiently pocketed) entities to manipulate the markets. There's no way to stop them, no way to REALLY track them, and there's every reason for them to do it as long as people keep buying into these coins/exchanges.

I'd wager that people who don't think this is happening are blindlingly optimistic about what's going on.