It's only a cosmetic change from a tech point of view of course, but from non-tech point of view, maybe it would be safer to say it's a youtube offline player than a youtube video downloader.

It would require to pipe downloaded video to vlc or something by default for this to be true, of course.

Agree with other comments here, as well : youtube-dl reference should probably be removed. It will be added back by those who link to the project.