I continue to be doubtful on the veracity of the leak. I can't imagine anyone vetting something like this going out in any official capacity:
"We’re giving You a license, not agreeing to take on potential liability when We do so. To be honest, We’re not really sure what We could do while making Dungeons & Dragons content available to You that could ever be “grossly negligent,” but Our lawyers say We need to include that last clause under Washington law, so in it goes."
There's also a ton of vagueness that I can't see ending up in a legal document. Case in point, the use of the word "something" in this section:
"A. You agree that nothing prohibits Us from developing, distributing, selling, or promoting something that is substantially similar to a Licensed Work."