"Scihub stopped updating the papers in 2022"

True but it matters a lot less in many fields because things have been moving to arXiv and other open access options, anyway. The main time I need sci-hub is for older articles. And that's a huge advantage of sci-hub--they have things like old foreign journal articles even the best academic libraries don't have.

As for mirroring it all, $2200 is beyond my budget too, but it would be nothing for a lot of academic departments, if the line item could be "characterized" the right way. To me it has been a bit of a nuisance working with libgen down the last couple months, like the post mentioned, and I would have loved for a local copy. I don't see it happening, but if libgen/sci-hub/annas archive goes the way of napster/scour, many academics would be in a serious fix.