This is a very naive view of reality. WYSIWYG editors are superior in almost every way for almost all users. I used to force markdown on people too, but WYSIWYG

This is a very naive view of reality. WYSIWYG editors are superior in almost every way for almost all users. I used to force markdown on people too, but WYSIWYG is really a killer feature for most users. It requires far less learning, the features are more discoverable, it's quicker to edit even after they manage to become proficient with markdown, and there is no mental translation from what they're editing to what it's going to look like. But also other features that you might not immediately think of are very important, such as the ability to copy-paste from their existing word processor documents and preserve markup. Editing rich text with a plain text editor rather than a rich text editor is to most people like editing your photos with a hex editor instead of Photoshop is to you: not the right tool for the job, unpleasant, slow, requires learning, requires mental translation, and can't easily copy paste from existing material.