One of the benefits of Counfluence is that it is one of the only Wikis where I've seen non-technical people being able to create content on a daily basis. Linking pages, inserting graphs and images just works. I have yet to see that in anything based on markdown.
Yeah, non-technical folk were one of my key audiences for BookStack which most other popular open-source offerings, at the time, seemed to lack focus for. People do love their markdown input though.
I'm currently rebuilding the editor; My goal is it have an easy WYSIWYG editor that allows instance back-and-forth switching to Markdown. One of the tricker parts is avoiding obscure/custom markdown syntax for non-common/custom content blocks, as one of my main principals is to ensure user content is portable/non-proprietary.