It's like defining Germany as "a state that genocided various groups", or defining Irish nationalism as "a movement characterized by terrorist attacks against British civilians". Whether or not those claims are accurate, they're not defining features of the things we're trying to define.

And sure, most Zionists are not Jews because the Jewish population is too tiny to be a majority in almost any political category. Similarly most people who support Somaliland independence are not Somalilanders, but probably Indians or Chinese or something.