I am not sure what all the attempts to prove Jowenko did not actually stand by his assessment of CD of WTC7 are for. AFAIK, he never specifically backed away from it, unlike Romero wrt the towers.
However , as pointed out, he cannot envision how it was done. That is quite pertinent, it amounts to what Yosemite Sam said in the Looney Tines cartoons, "I don't know how ya's done it, but I knows ya done it".
I would expect an explosives expert, having stated that he has had access to the construction drawings, would be able to come up with an explosives placement plan. Logistics need not be his forte, in that if he had a plan he need not be able to explain how it was accomplished clandestinely or in a few hours while the structure burned. That is a condition that understandably is never asked of any explosive demolition company. Maybe, just maybe a military demolition expert could opine on that. In that case though the expertise would not be in bringing a structure of this size down, especially with the specifics of causing little to no harm to structures east and west of the demolition, which we are supposed to believe was a requirement.
At any rate if this were ever to go before a court, which it won't despite AE911T's stated wish, the opposing side would simply call more than one recognized expert to testify to the contrary.
Ironically, if AE911T did attempt to devise an explosives demolition plan, it might involve one in which only column 79 is taken out at the 10th or 14th floor connection to the equivalent girder running to the perimeter. Such a plan would solve the issue of dealing with fire, have a ready made progression to collapse courtesy of NIST, and partially solve the issue of noise. Of course they would need to back away from freefall=CD, and sudden onset =CD, so that will never happen.
Therein, imho, lies another of Jowenko's problems with explaining how it was done. The known , visible, progression of collapse requires explosives to cause first the infalling east penthouse, then the development of the kink on the north face in line with the first instance of that EPH infalling, then the tilt of all levels including the roof on either side of the kink(east and west extents staying put while the kink ends drop), then the infalling of more western rooftop structures,,,,,,, and,,,,,, only,,,,,,, then, explosive demolition of the remaining perimeter columns such that free fall begins a couple of seconds after said perimeter demolition.