They seem to be using it as a line of demarcation between the internet that was much more decentralized, with lots of personal blogs, fansites, etc. and the current state, where most people just rotate between Facebook, Twitter, and Reddit. I remember discovering and reading lots of video game-specific websites in the 90's and early 2000's; nowadays those are almost entirely replaced by subreddits and Discord communities.
A surprising number of the older sites still exist, they're just entirely buried under spammy, low-quality, ad-supported game publication search results, so you'll never find them by searching [name of game], or that plus "review" or "guide" or "mods" or whatever.
