I disagree. The terminology is not comparable to the nazi swastika. That iconography was little known in the western world and carried no deep meaning before nazis appropriated the symbol. Moreover, nazism began as ideal of extremism.

I think they have completely co-opted the terms "evangelical" and "fundamentalist" in America. They have certainly forced the addition of that distinction of "evangelical" and/or "fundamentalist" before their extremist brand of "Christian." The Dominionist brand of Christian nationalism is now irretrievably intertwined with the prosperity gospels – and neither dogma is in line with anything Christ is recorded to have said or done.

However, they have no more co-opted the in it's entirety than extremist Muslims have "Islam" and "Muslim." That is a more apt comparison, IME.