User blog comment:MisterWoodhouse/The first Unified Community Platform release is now live for NEW wikis/@comment-8072-20200410233043/@comment-1038387-20200412110640

It wasn't quietly, and it was, what, well over a year ago.

They were an overall SEO drain for the domain, with lots of short pages with bad spelling, repetition and poor moderation. People were using it like they would Google rather than Quora/YahooAnswers, and it doesn't work like that. As a platform, the concept was no longer needed with chat, forums and Feeds providing a place to ask questions.