NIST, who investigated the WTC disaster, said in its report "no steel was recovered that reached temperatures hot enough to weaken". And no, the issue is not simply the failure to recover it.

It's comments like these that show that people don't actually research anything, they just regurgitate "sound bites" that give off the impression of being science but are actually misdirection. It makes us feel smart without having to put in any effort. So we parrot ourselves into ignorance and all it takes is complacent media that asks no real questions.

I would love to read this if you point me to where in their analysis this quote is from. Given the rest of the NIST's reporting on the matter, it sure seems like the only issue is the failure to recover it.