This is incorrect and what they want you to believe. Yes heat does weaken steal but it doesn't weaken it to the extent that a steal frame would collapse. Especially not in a controlled manner.
Crazy + grammar + ignorance.
You should study a bit before you watch too many propaganda videos...
to quote ErisDiscordia from just a few posts back:
The fact that people are routinely dismissing conspiracy theories from a position of arrogant superiority without feeling the need to engage the evidence (because they KNOW what is true and what is not...) seems extremely worrying to me as it indicates a captured population which has been trained to unquestioningly trust authority and even attack anyone who dares suggest that the authorities are not benevolent and wise.
Shame on you, people!