That page of text with ads took about 10 seconds to load and render on a 50-megabit internet connection with a 3.4 ghz i7 CPU and 16 gb memory. Let's start laughing at Fortune's web development team instead.
I have similar specs and connection. Using uBlock (which blocked a full 25% (32 requests) of the page's "content") it loaded in 3 seconds flat and looks far better than the ad-ridden version. Sad, that this is what it has come to.