What keeps working, by one long-term account, is the Kobra line itself: an owner who has bought many Anycubic printers over the years retired the older Mega models and kept every Kobra in service. What breaks is less clear. The two negative accounts call the machine a pain and say they were unhappy owning it, but neither names a specific failure or a fix.
The long-term record here is thin. Only a handful of separate owners raised reliability at all, most of the comments are about wanting to beta test newer Anycubic machines rather than about the Kobra 2 itself, and there is no verdict yet on either theme. Treat this page as early notes, not a settled picture of how the printer holds up.