User blog comment:MisterWoodhouse/The first specifics on the Unified Community Platform/@comment-27661770-20191016202340/@comment-24006128-20191016212031

As stated in the blog, around 100 wikis out of over 350,000 on the platform use Special:Forum regularly. That is a small number of communities.

We fully understand that the alternatives presented are not 1:1 replacements, but Special:Forum is a custom feature developed specifically for the heavily forked version of MediaWiki 1.19 which runs Fandom. The amount of work required to get it running on the new platform cannot be justified by the usage stats. Not moving to the new platform means holding back years of improvements from the Wikimedia Foundation, access to new extensions, and freedom from the code monolith that prevents us from building awesome new features for our users, some of which have been requested for ages.

We're essentially having to trade a few custom features (which we're working to replace) in order to get an awesome new platform which makes tons of things easier and better for everyone overall.