He surely knows that place. Actually I found this website from that place last summer, but tried to register only at the end of the last year, but because it was complicated and I was lazy it was delayed by couple of months. Then after I registered, the confirmation email link did not function for about 2 weeks, even though I tried every day and in all browsers, disabling ad-blockers etc. I asked for help because of the technical problem, but the mods did not reply to my message. Then one day for some reason I managed to press the link.
One key name is Henry Laasanen. He has blogged on many websites, I've read them all and read the discussions if comments are allowed. He hasn't been active blogger for a few years. He gets banned from different places sooner or later.
It's not only for incels. There are normies and chads ("YTM", "ytmi", "jännämies" etc.) also. Women also. It's a place for single people, but there are also active participants who aren't even single. And most aren't even registered, so one can't know for sure who is who. It has declined since some site reforms. And gotten much less active. I don't know where the discussions have moved, maybe Facebook? I've never had a Facebook account.