Of course humanity is not ready for skynet. But there are rebel forces - the no AI using humans. They may be a dying breed but at the least they put up a fight. Many other humans already have become servants to skynet (version 16.0 now). Next step for them is the neuralink chip. Some billionaire with twitching right arm gestures owns that, doesn't it ...

(Also, Cameron was not quite right with regards to skynet. It is much much dumber but also more effective than displayed in his movie really. Kind of a weird combination if you look at the current AI slop out there.)