Thank you for answering my questions! Let's discuss them.
Just because some people can skip instructions doesn't mean you need to shut down the mod entirely from everyone else. I understand that it will lead to increased amount of support requests, which can be disregarded with just one question - "Have you installed both X and Y?". It's their problems after that, persist in the doomed world you have created.
Yet it's a reasonable point, but it has one issue:
As I said, the mod has not been released yet. And it's been a few years since. Right now, people can't combine these mods.
A reasonable point, too, but it has less drastic solutions to it. You can, again, write in the description that the mod is out of support as you focus on other mods. Everything else can be ignored. It's not like complaints disappeared when he shut down the mod. Even thought he has explicitly stated that the repository is down, people are still posting "GitHub for some reason doesn't work". It will be persistent in both cases. Just in one case, you will have an open mod for those who (like me) downloaded it a long time ago and now need to restore it, and in the other case - nothing, not even a guide (at lease I haven't been able to find one) for those who have folders backed up.
Hard to argue against that. Don't get me wrong, I like the mod and grateful to the author for creating it, but I still don't think this reason justifies completely nuking down such a great mod for a few years.