Look, I know almost nothing about architecture, however I do know that most run of the mill towers these days are built relying on a central core - those thin beams on the edge of the building are not and were never intended to support the entire structure. Also, there is video footage on tiktok showing the building collapse appears to have started at the very top, with the roof collapsing and it dominoes all the way down. Here's an example of a 50 year old tower, still standing, with only a central core: