The answer to your question is that there wasn't a 2000º hot spot at the WTC for weeks after ... this is something that would be obvious to millions of people in the area ...
The thermite reaction is very energetic ... thus the very high temperatures ... it also conserves matter, meaning there'd be one hell of a lot of aluminum oxide left behind, weeks of cutting and huge cranes hoisting this stuff out ... again, something obvious to millions of people in the area ...
Military thermite is used for armor penetration ... plop a 2500ºC slug of molten iron inside a tank ... cheap easy solution ...
And where were the thermite reactions that you imagine caused this hot spot?
Remember, your theory is that thermite was used to destroy each floor, from the point of impact of the planes to the ground. That's roughly 90 floors in one tower and 80 floors in another. With 240 perimeter columns and 47 core columns per floor......that's roughly 50,000 thermite reactions.
Yet....nothing.
Worse, you theory mandates that there was so much thermite in the WTC that it would continue to burn for WEEKS after the collapse.
Yet....nothing.
Worse still, the perimeter columns, where 3/4 of the thermite reactions per floor would have occured.....were on the OUTSIDE of the building. Exposed to open air. An would have been utterly obvious to anyone looking at the tower. As Thermite burns so brightly that it can damage your eyes permenantly if you look directly at it.
Yet....nothing.
Worse still, even after the towers fell, there were stll no thermite reactions EVER found. Despite your theory requiring 10s of thousands of such reactions and so much extra thermite that it would burn for weeks after.
Yet....nothing.
The quantity of thermite necessary to bring down the towers and then burn continually for WEEKS would have been larger than the towers themselves.
Yet....nothing.
How do you explain these wild inconsistencies between your theory and the evidence? You can't. Your conspiracy is an awful explanation of events that is useless complicated and contradicted by overwhelming evidence.
And even you treat your conspiracy like useless garbage, discarding it the moment you're subject to even the most obvious questions that any reasonable person would ask.