In reply to Torsten.

WordPress Tavern | Torsten commented on Easily Add Citations to Quotes With the Better Blockquotes Plugin

I think at the very least, if it goes into core, it should only be available to the visual editor. I think it’s safe to assume, at least for the most part, that if you’re using the text editor, you’re comfortable with code. There are still some hangers-on within the blindness WordPress user space who are using the text editor in place of the visual editor, but with the accessibility experience of the visual editor having vastly improved, that’s no longer a necessary workaround for screen reader users.