Why assume that ALL of the terrorists know how to make this apparently novel explosive?
Like isolated Islamofacist supporters (perhaps in Norman OK), who may need the information to act independently?
If a major news outlet publishes the info far and wide, I bet it reaches people who do not now have it, some of whom may choose to act on it.
You have expressed a desire to learn how to synthesize and potentially use a high explosive (in a public forum no less!), admitting that you don't have the formula right now but you'd like to get it. Could there not be a few others like you, willing to act?
And what if one or twenty of the people who get the information don't live where there are a bunch of stumps?
I think that information that the enemy can exploit should remain under wraps. The mall it saves could be your own.
Actually, it is pretty easy to make a lot of high explosives from readily available household chemicals. The problem is not in the manufacture, but knowing how to handle and store them. I'd suspect most people would blow themselves up trying to make something from such crude sources. And the info is readily available on the internet, and most chemists could do it in their sleep. In the case of HMDT, the precursor hexamine is likely to be picked up by a trained dog. The danger of hydrogen peroxide is that it is odorless.
That said, I see your point. No need to educate the aspiring jihadi in Norman, or Tacoma for that matter.