User blog comment:MisterWoodhouse/The first migrations to the Unified Community Platform/@comment-45607798-20200526175241/@comment-24006128-20200526175631

Because Discussions, Message Walls, and Article Comments have been moved from being MediaWiki-based (which caused issues for us to upgrade the platform) to Feeds, a separate technology from MediaWiki.

Our MediaWiki installation having JS support is unrelated to Feeds not being a wiki-based software.