I meant that people like Matt Gaetz and MJT are promising to make the 4th turning happen, by escalation of the existing obstructionism and even outright bringing about a second civil war. I do not think it will happen so quickly, but they will try again, and again, and maybe one day it will. So this is a time of "replacement". But I did not read the book, just a wikipedia article about it, so probably I am not matching up the terms well.