Perhaps Btselem was an important element to have in Israeli society. Even when I was a soldier I respected the need for a watch group. However, over time the increasingly moved away from legitimate criticism, in favor of demonization of soldiers, Israelis, and Israel.
Today they have shown that they are no longer a rights group, but a political group that is against the state of Israel and the right of Jewish self-determination itself.
Their newest policy paper is an announcement that they have adopted a antagonistic mindset.
They claim that the entire history of Israel and all the policies and actions that occurred from it have stemmed from a principle of Jewish Supremacy. They of course mean Zionism, and I expect in future statements they will conflate the two.
Jewish Supremacy is a term long used by white supremacist, Neo-Nazi, and Antizionist groups as a talking point. Btselem has fully adopted it. It contends that Jews are racist supremacists seeking to oppress others. This is simply false framing, and is not a position held by many.
The idea that all the Israel does is under a single principle is inane to anyone who has met an Israeli. Firstly, it implies that politicians, different parties, different people, have been acting in accordance to a general plan. Israeli governments barely plan for the year.