User blog comment:TimmyQuivy/On the Importance of Upgrading MediaWiki/@comment-8072-20200507232420/@comment-20644-20200508001302

It's not that they're in conflict, but that we went about the first part in a way that prevented us from continuing to upgrade. We could've built older features that communities were looking for in a way that didn't necessitate a fork from core MediaWiki. It's why we're having to rebuild features like Message Wall and Article Comments.