He did not say Israel is only for Jews.
This is true.
There's nothing wrong with the "it's Bibi or Tibi" slogan and Netanyahu is essentially right: while every citizen is equal, there can be no other national aspirations within the State of Israel than Jewish national aspirations.
I mean, other than the Palestinian issue (which I imagine is separate; plus I don't think it's recognized as part of the "state of Israel" proper), what other national aspirations are there in the first place?
It's not like Israel has some sort of secessionist movement like Catalonia/Quebec/Kurdistan/whatever