What is unnatural about someone giving an opinion to other people? Is anyone under obligation to accept his opinion? Is he responsible for the consequences of their actions should they choose to do so? Do his actions threaten the future of crypto, or is the greater threat not the attitude of an increasing number of people that bad investment decisions are someone else's fault?

McAfee's actions may lead, at best, to a small surge in price and an even smaller increase in long-term interest. The "pump-n-dump, everyting is a scam" chicken little types are far more of a threat. Stifling regulation will follow these people into the space.