Yeah I would be surprised if Christian Zionism is older the Jewish Zionism. I guess you could maybe argue it in the sense that Zionism didn't really have any power until the Christian monarchy of England approved it and began backing it and funding it. But still the ideology of modern Zionism originates from the Rothschilds in the 1800s as you say. But it also has roots that go way back thousands of years, they just revived it and put money and power behind it.

Similar to the Knights Templar. They were a huge organization in the 1200s, then basically died out. Then someone in the 1800s brought back the name as a secret fraternal organization, but it's not really related to the original organization. I think you could perhaps make a similar argument about Zionism, and maybe that's what he means about modern Zionism having Christian roots. Kind of still a bit strangely worded though on his part, I don't know