Not the OP but I'm happy to defend WYSIWIG editors. Things like font size and bold and italics exist for a reason. Markdown tables are extremely clunky. Inline images (or pretty equations) are important for many types of writing. Bullet lists in markdown more than two levels deep get interpreted as code my most syntax highlighters.

Don't get me wrong, I love plain text and I do most of my writing in markdown, but WYSIWIG editors have their place. As do things like spreadsheets (for represent lots of info) and LaTeX (for docs).