Other than not really having any context to be angry within (I am not speaking about any startup in particular), I generally agree that anger doesn't make innovation.
My point was that many young entrepreneurs have strong misconceptions about what it means to build a business. Every single one of those points are things I have heard from other entrepreneurs, things they -wish- they had known when they first started.
The point is not to discourage people from building business', that's absolutely ludicrous. The point is to get people to see what they are doing without the rose colored glasses and to bring up some common traps that entrepreneurs the world over fall into.
If you have been in business for any length of time, I am sure you realize that putting yourself in perspective is absolutely crucial to your success.
Cheers!