As I understand it, this was a sort of compromise the courts worked out in the interim. Seems likely that at some amount of delay, Sci-Hub would just break the injunction (I personally hope they don't, as the case seems to be wrapping up). I don't think any of this is ridiculous.
Relatedly, if any academics want to help a small bit to resolve this by signing the amicus brief (i.e. intervention application) we made for Sci-Hub, you can do so by contacting me through https://docs.google.com/forms/d/1_if6Lipu-YPBMLk6zYjBxDFRA_c... and I will connect you with the coordinating lawyer. You can read more about this at https://forum.effectivealtruism.org/posts/bEKwqNDGysnZRcmpw/...