There is no way to shade out the background of the popup from the plugin interface so it ends up this weird floating box in the middle of the page. It does that and it does it well which could work for some, but not what I was looking for.
The low star rating, however, is thanks to the weird warning message it leaves at the top of EVERY SINGLE SCREEN in the admin area, not just the plugin's screen asking you to install the update notification plugin from WPMU DEV. Want to add a new post? Oh look, an annoying red box. There is no way to get rid of it. No. Thanks.