Greasy Fork is available in English.
Download videos/pictures with one click | Automatically package them into a ZIP file for batch download
http://greasyfork.icu/en/scripts/529453-twitter-x-media-downloader
but heavily pared-down. Designed mostly for when the Old Twitter add-on by dimden fails.
English only, removed the sensitive image related code, history is better handled, buttons work properly and are less error prone, and so on.
Other people aren't really the intended audience, but I'm leaving it public in case other people might be interested.