To add to this, be sure to wait for the immediate pushback. Stay calm, and understand that this will be a slow burner. Kindness and repeated contacts to the change minds more than one off aggressive arguments.
People have a difficult time changing their points of view, and some people can feel lots of psychological pain during that process.
That is a particular subset. There are people who see nothing g bad happening to themselves, but do have their eyes open and see the bad things happening around them. But, again, they are ready and primed.
It is much the same as addiction counseling: until people are primed to change, there is little to do but leave your hand out stretched, not pushing any further than that.
And they likely died out because they were not generalists. We have seen this in multiple hominid species, where the dentition and chewing musculature points toward very specific dietary niches, and then, they die out, because of massive changes in the environment they were living in, also change the density of their specialized food. And then, the generalists survive.
Again…