I found this whole line of conversation bizarre and probably racist

You guys are definitely submitting these, right?

When my partner and I met several years ago, he agreed with me that it would be irresponsible to have children given the state of the world, particularly with respect to climate change. I’ve only become more convinced of this as we’ve watched extreme weather events literally burn down part of our state. But several of our friends have had babies recently—something that I don’t approve of, but whatever—and I feel like he’s starting to change his mind. Recently, he asked me if I ever thought that the world would be better with more people like us in it and told me that it would be “dysgenic” for us to not have babies because we’re both “smart.” Although I always scored very high on standardized tests, I do not believe they are valid measures of anything, and I found this whole line of conversation bizarre and probably racist. Frankly, I thought he was too enlightened to believe such things. I’m currently staying with a friend while I try to decide what to do. Should I break up with him and, if not, how do I make him come to his senses?