Yeah, they seem to be re-reporting a story from 2012. Here's an archived post from 2012 with the same picture of the same tour guide (Simon Cockerell) at the top of the hotel: https://web.archive.org/web/20141110072645/http://koryogroup...
> Cockerell began running tours to North Korea with the company Koryo Tours in 2002 ...
> Ten years later, Cockerell met a North Korean who was working in China, and that man had the contacts necessary to arrange a visit.
Though the article has some later information:
> No doubt a source of pain for the Kim dynasty, the impressive 554m Lotte World Tower in Seoul, South Korea, which was finished in 2017, dwarfs the Ryugyong Hotel.