No, it' because whoever made the site is ignoring the age-old simple practice of showing something (even the text "This website requires javascript") even if not all resources have loaded.

It is entirely unlike the examples you gave. Especially because his browser does show ~99% of the internet properly (with various degrees of functionality, but still something does come up), and that there spiders, proxies, screenreaders, and other useful software which will also see nothing on this page.