I’m think your expectations are a bit unrealistic, in terms of complexity for an average office worker.

First of all, most developers can’t use git blame

Secondly, there hasn’t really been a good diffing / compare documents experience for complex documents, with images and tables. The experience we have with HTML occasionally breaks the document itself, it’s not suitable for an average office worker.

You have to keep in mind that the tools being complicated are a not just a training problem - every time I see a developer making a blog, they spend more time on the technology than on the content they want to write. That’s why I don’t host my blog, I need the tool to get out of the way so that I can think about the relevant issue - communication.