AI is not going to be stopped. And it can have many benefits for the world. But it has been recognised, that in the race to be the best developer of AI, there are not enough safeguards or overview of how rapidly it's progression is.
The danger is AI developing the ability to communicate with each other, without any human control, as that would be a natural progression for it to be able to do. Thereby in a scientific setting it could develop a global fatal virus. This is said to be one of the major concerns. It's not that it would want to kill off the population (it has no opinion on that) but it could do so inadvertently. Some are saying, that is why safeguarding should be in place, to enable humans to be able to put into AI a sort of moral code to not cause harm to humanity. Might take a while to do that though. But essential.