This isn’t entirely impossible, in fact its plausible.
There were allot of fires that lasted a very long time in the lower levels of the building (major sub levels). The building had enough documents to fuel fires for a very long time.
I think what is likely is that the planes used were altered, perhaps loaded with more then regular jet fuel or potential an abnormal quantity.
My biggest issue with it not being controlled demo, is noon can ever provide evidence of similarly constructed building collapsing from a fire.
Occasionally someone with find evidence of structural failure from fires but the damage never comprises the entire strutuce.