I've also done a facade inspection on a building where massive sheets of metal had been badly installed. The vast majority of them weren't connected to the structural steel beams, they were just held together by single screws (with no nuts!) that were falling off due to wind making the screws bore a bigger hole. A sheet had fallen off the 12th floor right onto the busy boulevard below.
the walls are thicker. everything is reinforced. external structures are bolted more securely. why is this a thing? taiphoons and earthquakes, is why.
if you like solid construction, there's plenty of it in taiwan. also, 101 is a flagship building. an item falling from the facade would kill someone or be a huge embarassment. this is not something they would let happen. just some local context fyi. that said, i wouldn't trust my life to those external structures either, but you do see alex testing as he goes.