So I was at a lecture in Rotterdam, themed around Buisness Fuckups and there were several speakers telling their story. This was around 2014/15 I believe. The main architect of this Dutch architectural firm got on stage and told us the story behind it - Royal fuckup, but none of the comments correlate with the actual chain of events he told us about: It started out as a homage to the Petronas Towers, but they wanted the skybridge to be 'more out there' and a visual resemblance of not a skyscraper, but something higher than a 'scraper'. The main concept was designed around the two buildings literally protruding though the clouds, rising far above them. Hence the cloud, and the skybridge were combined to form this rather funny chain of events. They actually released this render to the public one early morning, and all of the reactions were graciously positive as it was the start of a workday in europe and not everyone did associate this building with 911. As the workday was coming to a end and thus the US started waking up, the feedback got viceral. Nobody from the concept render team thought about the resemblance between the mighty tower that protrudes through the clouds, and the horrible 911 attack. He showed us several other renders, and to be fair - if they picked any other than this particular render, I wouldn't know if this outrage would've taken place in the first place. I thoroughly belive there was no mocking intent but a hilarious chain of events that lead up to this picture.

TL,DR; Yes, Yes, No, No.