It was, before Cloudflare and the Demcrats shut them down and completely deplatformed them, and even brought the owners before a congressional tribunal. They were nowhere near what they used to be, and had really been hit hard by censorship - like the rest of the interwebs - but, yeah. Probably the biggest and worst case of all out internet censorship I've seen so far. I think it's back as 8kun, now. I'm not sure if it's as big as it used to be, though. I haven't been there since it came back up.