You will need to install a user script manager extension to install this script.
Old information below...
If you have retweeted or liked the tweet, then you'll also see "Liked" or "Retweeted" spelled out along with the counts. I can't do anything about that since this is just a simple CSS stylesheet. It's not a bug you have to tell me about, nor is it something I can fix. The text is all coming from the website itself, made to be read aloud by accessibility software for the visually impaired, and I'm just using a simple trick to make it appear on the screen. For the same reason, I can't do anything about the "0" that appears when there's no activity on a Tweet.
NOTE: You may see scary looking "syntax errors" appear when installing/editing with Stylus, but I swear everything's fine. I think it's just an issue with that extension's built-in editor. (If you just type a space or something into the main text box, the errors all go away.)