The very first entry is the echo of the BoingBoing post, and you should be able to click on “Show full post” and see the text, and then select it, where it should offer you the ability to “Quote” it into a new reply.
Also, if the “quote” option doesn’t appear, you can copy/paste and add the > symbol before whatever you paste to get the quote formatting and then @ the author or poster if you want to get their attention.
It was there for me, then was gone, and now is back. It brings up a little menu of options, though: Translate to English, Suggest topic titles, Proofread text, Generate Markdown table. None work at the moment.