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I bet the average person knows it can't melt steel beams.
And the average person should also know that steel doesn't need to melt to lose a lot of it's load bearing capacity. At 500-600 Celsius, only 50% of steel strength remains.
Which, going right back around to jet engines, is why superalloys are a thing.
They aren't stronger or even more refractory than normal steel, just more expensive, but they don't soften at all until they're about to melt.
Because no one takes shop class and bends some steel stock.
Even people who've never done it are vaguely aware of blacksmithing, though, right? This seems like more of a failure to apply everyday material properties to a skyscraper.
Plus there would be wind fanning those flames hard which could raise the temperature some.
But the other thing to consider is that the towers could have been built with substandard materials in the first place.
Plus aluminum, which planes are made of, does burn hot enough to melt steel beams. And concrete weakens in a fire as well.
Plus all the mind control chemicals they use to make the chemtrails probably burnt really hot. /s
IIRC, the materials were fine, but the spray-on fireproofing left large patches uncovered. While not a direct cause, it certainly didn't help.
WTYP has a pretty good episode on the entire thing
This just in: scientists have determined that a more direct cause for the towers falling than defective spray-on fireproofing may exist. Rumors have begun to circulate that the WTCs collapse may be attributed to the two aircraft which collided with them. Details at 6.
(I kid, I kid)
Well, it would've collapsed either way, as you can see on the pictures during the fire that the metal is starting to buckle uniformly around the entire floor with the fire. But patches without insulation probably meant that it collapsed sooner than it could've.
Didn't help anyone trapped, so the net result is the same in that I fail to see how 30 minutes extra before it crumbled would've made any difference