That link works to embed. Some don't, I think the way the tweet is posted makes it different? Anyway, this is how it works for me. In the lower right corner is this symbol...click it;
After then, it the lower left, click this symbol;
And then, click the right side of this message box;
After clicking it, a message should appear briefly telling you "copied to clipboard"....then just come here and press an empty space on a new message. It should show up as a link for a few seconds until it embeds. This is the way I do it, there may be other (easier) ways.