Sure. These are coherent organisations. Talking about them is meaningful. Talking about "Zionists" is nonsense.
> what does it take for a peoples to establish their own 'Jewish nation-state' on a bit of land that had people living there already?
Lots of options! Ben-Gurion's was a supremacist one. (I wouldn't argue it was fascist.)
Look, you're making a good argument the people and groups you're citing have elements of these traits. Again, that's meaningful. Being trope-y and going off about Zionists will appeal to people who already agree with you, and that's fine, ra ra-ing is fun, but it isn't intellectually honest or particulalry productive other than for stroking the egos of folks who turned this into their pet discussion topic.