Why do you say that it’s forbidden to have a Jewish state in Galus?
That was the opinion of the Satmar Rebbe Zt”l (that we can’t establish a government in E.Y. without Moshiach), and arguably the opinion of the vast majority of gedolim before the war (the approach, however, of R’ Reuven Grozovsky, Zt”l and others, after the establishment of a state, was more pragmatic and less idealistic than that of the Rebbe Zt”l.
However, to say that the group which presently calls itself “Neturei Karta”, “has a point”, would almost be like saying that a teacher who beat a student severely “had a point” because the student did indeed speak in class without first raising his hand.