There is nothing inherently wrong with the argument that Islamic jihadism and Nazism share many features, and that there are points on which they should be dealt with in similar ways.
The problem is in this characterization of the response to jihadism that he seeks to denigrate:
If only, some argue, we withdrew from Iraq, or Israel made massive concessions, then we would assuage Jihadist anger. That argument, while often advanced by well-meaning people, is as limited as the belief in the Thirties that, by allowing Germany to remilitarise the Rhineland or take over the Sudetenland, we would satisfy Nazi ambitions.
He is likening
objections to the unjustified and illegal acts of the US and its allies in invading and occupying sovereign nations to
acquiescence in the unjustified and illegal acts of Germany in invading and occupying sovereign nations.
He is likening
condemning the acts about which other peoples are legitimately angry with
condoning the acts committed by people exploiting others' legitimate anger.
It simply makes no sense. And it's simply base demagoguery. And for some reason, people like this are confident they can get away with this kind of dishonesty and trickery.
The parallel that actually exists is in the fact that there are legitimate grievances among groups of people, and that Nazis and jihadists both exploit those grievances to achieve their own ends.
The people of post-WWI Germany had legitimate grievances against others in the world. The people of Iraq and Palestine have legitimate grievances against others in the world.
Addressing those legitimate grievances could have gone, in the case of Germany, and could go, in the case of Muslims in today's world, a fair distance toward depriving the leaders of the movements in question the legitimacy they gain in the eyes of some members of the aggrieved population by claiming to be toiling on their behalves, and deny them the opportunity to reframe those grievances -- in ways like "purge corrupt cosmopolitan influences" -- in ways that serve their own interests
and not the interests of the aggrieved populations.
I really don't think that we have to embrace the ideologues and militants of Islamist jihadism in order to reject the dishonest nonsense being spouted by people like this.