Like what? What did they say?
I agree that anti-Zionism is not anti-Semitism, but whether this move by deSantis is exactly that mistake, or something else, is not well illustrated by the opinion piece.
Usually moves against anti-Zionism dressed up as anti-Semitism are the work of progressives who support a Zionist viewpoint. It is unusual for conservatives to get involve in this bun fight which traditionally pits one sort of leftist against the other.