Here's where I somewhat disagree.
Yes, "Zionism" is but one form of settler colonialism, but it is the basic form that directly targets a particular group of people -- the Palestinians -- for total liquidation & massacre in the name of specifically "Jewish" nationalism.
Also, classic antisemite Nazis aren't going to change their rhetoric merely to adopt to the fascism of really existing Zionism; their hatred of people of color supercedes even their hate of Jewish people.