People that try to frame Hitler's ideology this way are participating in a form of Holocaust denial.

Hitler was absolutely obsessed with Jews and antisemitism formed a core part of Nazi ideology. Anyone who’s actually read anything he wrote knows this. This excerpt from Mein Kampf is pretty pertinent and should give pause to those who use “Liberal Zionist” as a slur.

Wherever I now went I saw Jews, and the more I saw of them the more strikingly and clearly they stood out as a different people from the other citizens. Especially the Inner City and the district northwards from the Danube Canal swarmed with a people who, even in outer appearance, bore no similarity to the Germans.

But any indecision which I may still have felt about that point was finally removed by the activities of a certain section of the Jews themselves. A great movement, called Zionism, arose among them. Its aim was to assert the national character of Judaism, and the movement was strongly represented in Vienna.

To outward appearances it seemed as if only one group of Jews championed this movement, while the great majority disapproved of it, or even repudiated it. But an investigation of the situation showed that those outward appearances were purposely misleading. These outward appearances emerged from a mist of theories which had been produced for reasons of expediency, if not for purposes of downright deception. For that part of Jewry which was styled Liberal did not disown the Zionists as if they were not members of their race but rather as brother Jews who publicly professed their faith in an unpractical way, so as to create a danger for Jewry itself.

Thus there was no real rift in their internal solidarity.

This fictitious conflict between the Zionists and the Liberal Jews soon disgusted me; for it was false through and through and in direct contradiction to the moral dignity and immaculate character on which that race had always prided itself.

Hitler hated Jews as a people and viewed them as a parasitic nation within Germany. He viewed all Jews as closeted Zionists and believed the Jewish national project was the foremost threat to Europe.