youtube-dl can still be used for reference so that people can use as it as a starting point to learn to scrape video. If enough people take an interest in fixing their local youtube-dl individually when things change and it stops working, even just for themselves, means that the video scraping knowledge is more widespread. Maybe that is a bit of a pipe dream, but it is something people can do if they really care about it, there is certainly the motivation now. Yeah, it's going to be a lot more difficult now that there is no longer a centralised community for it.