If the spec leaks turn out to be true, then I say it's a service to gamers and puts companies on notice not to BS about their product's capabilities.
If the spec leaks turn out to be false, then DF's cred drops sharply and people will stop paying attention to them.
IMO if information that is of interest to consumers is accurate then putting it out to the public is usually more beneficial to consumers than harmful, and thus it is usually a good thing, so long as it is done legally.
I expect DF's spec leaks are legal, even if the source has breached some form of NDA or confidentiality agreement.
“The fundamental cause of the trouble is that in the modern world the stupid are cocksure while the intelligent are full of doubt.” - Bertrand Russell
"When the power of love overcomes the love of power, the world will know peace."
Jimi Hendrix