The problem with this line of reasoning is:

* I cannot, in good conscience, say that image support was a mistake. There is too much valuable work that cannot be expressed well in text and needs to be graphical. Ditto sound and video.

* Once you’ve added images, you need rich text. If it’s not there, people who insist on doing it anyway will fake it using pictures of text, which is simpler than proper rich text support, but also a lot worse because it doesn’t work with TTS, cannot be indexed for search, and doesn’t work with the clipboard.

The “pictures of text” problem is not just professional designers justifying their paychecks. They’re all over the place on Twitter and Facebook, because of the poor text formatting options they provide.