It's a page welcoming and explaining any Japanese readers who may happen to stumble upon 4chan from Futaba Channel. 4chan was founded by the "weeaboos" you dislike so much.
weeaboo
I'm not one, but I'm pointing out how silly you are with your "anti-weeaboo hate" on a site made by "weeaboos". You wouldn't happen to be DJapco by any chance?