I haven't heard of that story about decoupling exits from liquidity before. At where I live, the mantra is that if you take money, you must have been looking to an exit. If someone put money on you, they must be eyeing for a quick exit - there's no way around it. In fact, I've heard many "mentors" and investors explicitly tell me exactly that.
Is this separation that Phil talks about a common knowledge in the Valley? Or anywhere else?