That is the TL;DR of Thomas Kuhn's "Structure of Scientific Revolutions." It is almost universal that when a new way of looking at the world comes along, very few people are persuaded to adopt it on an individual level. The consensus view generally stays the same until enough scientists who grew up with the old model die, that the ones remaining are outnumbered by new scientists who grew up with the new model.

It is bleakly comic, and there is surely some sort of productive lesson there, but I don't know what it is.

I’m hopeful this will be how we solve racism and intolerance… hopefully as enough people are brought up the right way, we will eventually move past the hatred in the world today.