blended winglet
I'm encouraged by someone at least asking a questions, such as yourself, rather than making uninformed point by point statements of their idea of the sequence of events.
I support your kind of discussion following an accident, rather than the latter.
Only by group discussion of experts should anybody attempt to put together a trail of findings/analysis. I know that collectively there are experts on this forum, but I doubt that any one person has sufficient expertise to set forth some of the speculative scenarios I saw on the earlier pages, especially when they are counter to historical facts.
For background material the members might consider previous experience with widebody twin aircraft relative to gust loading tearing off engines and/or tailfins, or engines themselves catastrophically failing and tearing either themselves off or the tailfin off.
The products flying today have immense margins against this type of loading.