Yes, please, tell me more about how hiring some dude to program your product and him stringing you a long, for months, in order to build (and complete) your competition and be first to market is an "excuse."
As the story goes, by the time they realized they were getting completely fucked over, by the guy who was supposed to be building their product (read: their execution), it was already too late. facebook was already up, running, and taking members, while the other guys still had months of coding to get done.
If it was a fair playing field, then sure, your bullshit line of "Excuses /= Execution" may hold some water, but it was anything but.
At some point this conversation could turn to, do we admire MZ for making himself money (if so, he deserves his own Mount Rushmore) or do we admire him for business innovation and changing the world ... okay, but he did cash out at $38!
So he's fantastically rich guy and did it with questionable ethics. Personally, I think he's a shitty CEO. Anyone thinking he fucked over the Henry Winkler twins should stop and consider how hard he fucked over his own shareholders on the IPO - FB would have had to cure cancer to push and keep that stock above $40.
FB is a giant circle jerk of time wasters. That's his legacy. So fuck him.