I am not sure how to feel about leaks. I think the people who worked hard on the product deserve to present it to the world as they see fit. It sucks to steal the element of surprise from them.
That's the risk you run when you take too long to announce things though. The longer you sit on information the likelier it is to leak.
I'm not really sure who Brad Sams is, but he is gaining exposure and notoriety based on the work of others.
Yeah, found it a bit bloody rich when he tried to say at the end, "please remember to subscribe, I've been working hard to bring you this content...", and I just thought "what the hell did you do? Other than leak some info that wasn't yours to reveal."
Imagine having the gall to try some shit like that with a straight face.