Just like 9ll -- three steel framed skyscrapers in New York City blew up due to fire.
Look what we are up against, people who do not merely believe an incorrect theory but can’t even agree on the things that are checkable. The Twin Towers weren’t steel-frame skyscrapers, and they did not blow up. (The third skyscraper must mean #7. I don’t need to bother talking about it.)
Not that the Twin Towers wouldn’t have collapsed had they been steel-framed skyscrapers, instead of the tube-like structures they were. Maybe they would have collapsed in a different way. The part of the Pentagon above the hole punched by the 757 eventually collapsed, and the Pentagon is a steel-frame structure.
(BTW if there had just been a fire and no impact then the Twin Towers may have stayed up, because the fire-protection material wouldn’t have been shaken off of the steel parts.)