Reply to a video with a comment mentioning u/savevideo and you'll get a response in a few minutes with a link. I think Reddit Enhancement Suite might also have an option for adding a download link.
As for an official paid feature: as soon as they start collecting money for video related features, the video creators will start circling for their cut of the revenue.
No they haven't. It voluntarily and temporarily shut down. Someone was pretending to represent Reddit threatened to sue u/savevideo, but Reddit admins stepped in and confirmed it wasn't them and that they don't have anything against u/savevideo
As for an official paid feature: as soon as they start collecting money for video related features, the video creators will start circling for their cut of the revenue.