My understanding is that the company that owns myanimelist's server is the one that shut things down while they investigate a possible vulnerability, and the mal team is unable to do anything until the parent company finishes their investigation.
IMO Anilist and Kitsu are both perfectly functional, if not superior alternatives to MAL, and I won't be surprised if a large number of people end up moving to those services.
Kitsu also just recently released a pretty nice mobile app as well.