Seems to me that both your facts and logic are off here. Aren't you claiming nano-thermite materials are the literal smoking gun? Those typically, while having a low ignition point, have a lower burning temperature than jet fuel, which burns at 2500K (about 2230 C). In the open air it will be a bit lower, but nano-thermite is even lower than that at about 1000 C.
Second, you talk about molten metal, but then say that steel melts at 2800 C and then claim the fire wasn't hot enough. Well, if there was molten metal, the steel was melted and thus we know the fire was hot, but still...not really sure what this has to do with helping your cause.
You are also ignoring the fact that steel does not have to MELT to become malleable. Steel will fold and flex very easily at these temperatures - making it not suitable for holding up massive loads. Steel will bend at low temps once the loads become to great for the strength. A falling building will have loads falling in the floors below that are crashing down with momentum into areas that are not carefully positioned over support, causing breakage even without temperatures.
I am not even an engineer and I can see all that just from my experience working on houses.
You don't even see how your own arguments weaken your other arguments. I am MORE confident now that it WASN'T a gov't job than I was before hearing all of your views on this, sorry.