I didn't read the entire article and then got blocked by a paywall but I do not believe "skyscraper city" is well defined, so not hard to dispute. According to

I didn't read the entire article and then got blocked by a paywall but I do not believe "skyscraper city" is well defined, so not hard to dispute. According to this list https://skyscraperpage.com/cities/?10=1 https://skyscraperpage.com/cities/?10=1 Chicago has the second most skyscrapers of any US city. Philadelphia is #7 on that list and is still affordable. If Philly is not considered a "skyscraper city" than that means there were only 6 or less of them in the United States to begin with.