Is not that they don't care lol but jump is being super aggressive lately, remember is not just MD, but mangarock also shut down with several others, Jaimini is not going to release more jump stuff and MS shut down completely. If there are other sites still open is most likely because they found a lawless zone.

Update: The .org domain has been restored, so old links that didn't load following the server switch should work now. (If you get just a picture of anime girls, try Ctrl+F5 or whatever the Mac equivalent for a fancy refresh is)
Now's your chance to add Even If It Was Just Once, I Regret It.