Yep. I just did some reading and I'm surprised 8chan was formed in 2013 because I lurked 4chan in the aughts (between '06 and '10) and could have sworn 8chan existed back then and was mostly referenced mockingly as the place you go to find CP. I know 420chan was around then. Maybe my one or two forays back to see if 4chan had "gotten better" (ugh I was stupid) were more recent than I recall. Just weird to see its formation discussed in direct relation to GamerGate.
Speaking of 4chan, add my voice to those calling for its closure. I was active on /b/ when the VTech shooting happened. I remember the overall mood & reactions surrounding it. Doesn't matter if this shit is isolated to /pol/ now. Shoulda been nuked from the 'net ages ago.
/pol/ as a containment board has never worked and never will work. Within a few months they were spamming any of the semi popular boards with their vitriol till it became normal. The owner is a racist himself(he bans what he considers "black memes") and recently tried to split the site up to 4chan and 4channel to get more ad revenue. Not sure how it worked out or how it would effect shutting the place down.