Hold on...
I think that there needed to be some more discussion how a single column failure in a high rise leads to the total collapse of the building. In actual fact it would not and the collapse would be local to the column even it it was full height of the building.
You seems to be assuming that, if not for the truss system, the building would not have undergone a global failure following the buckling of column 79 or that there is some incredible universal lesson about transfer trusses to be drawn from the failure of WTC7 that NIST needed to detail for future building designs. But I don't know why you think that other than that it's a pet theory you happened to land on. The NIST authors studied the truss system and its role in the collapse extensively, but, don't take my word for, or even links that you apparently can't be bothered to read, let's look at what the NIST report itself actually says. I currently only have a local copy of the summary NIST report (NCSTAR 1-9A), but even it has ample detail on their findings re the horizontal propagation. First, let's take a step back and see how columns 79, 80 and 81 all failed before the truss system began to fail:
Now here's the clear narrative (with illustrations) about the role the trusses did play in the horizontal propagation of the collapse. You can find that under the section helpfully titled "Horizontal Progression of Collapse":
NIST makes it very clear that in the case of WTC7, the loss of truss 2 triggered the collapse of column 77. NIST also makes it clear, however, that the primary driver of the column collapse propagation throughout the entire building was (1) loss of lateral support, (2) debris impact, and (3) load redistribution. So the transfer truss systemn did play a role in the collapse and that role was clearly detailed. But was that role determinative? It seems likely not. And was it generalizable into an important lesson about transfer trusses? It seems likely not (truss 1 survived the initial collapse wave, for example).
Their simulation did not come anywhere near matching observations so it was rubbish.
I disagree. Their models experience a bit more distortion in parts of the building far away from the key initiating areas--e.g., along the roofline--but the models are remarkable for how they so closely capture the timing of the collapse sequence and otherwise show the internal-to-external dynamic of the collapse.
To note that they "looked at the transfers" essentially means nothing because if they had and understood that it was THEIR failure which caused what they called "global" collapse and its form. There is no other explanation which explains the way the tower came down. The transfers failed and with them the structure had no axial connection to the foundations from floor 7 to grade which precisely aligns with the time frame of the so called free fall phase of the collapse.
Ignoring the role they transfers play... CRUCIAL one... is in my opinion a huge blunder and one has to wonder how they could make it.
Unless there is a better explanation for their ignoring the crucial defining role in the form of the collapse of the transfers... my hunch is that they did not want to explore design engineering choices... nor even the wisdom of erecting an office tower over a main power sub station. Those decisions had nothing to do with the terrorist attack, but perhaps if the designs of all three towers were different they might not have completely collapsed. I believe this is true and engineers will agree. The design decisions were of course driven by economics more than anything else.
Again, you want to believe the transfer trusses played some special, determinative role, but you do not know that. I've shown you that, without doubt, that the NIST authors spent a great deal of time theorizing about, and actually modeling and studying, the transfer trusses. They ultimately detailed the role they found the system played in the collapse very clearly in their report.
And this isn't about NIST versus conspiracy theories or me saying the NIST report is unimpeachable. I've made it clear time and time again that I of course understand the NIST report is not perfect. I am not posting to defend the NIST report; I posting to correct you as you misrepresent what it actually contains.