I was not clear- when I wrote "people" I was thinking of people, often in Hawaii and who very much know the history of the state, who advocate for independence or sovereignty from the USA. They very much know about the vote, but its not mentioned. I should have specified which people I meant.
Having written that, my experience is that most Americans are quite ignorant of Hawaiian history: The overthrow of the Hawaiian government, its time as a territory and how large sugar companies dominated life there for decades, the plantation system, and the way the USA initially colonized the state. They likely do not know about the vote. People from further afield- well, they usually are on the same boat at best or know even less. This is understandable, its a small place in the middle of a large ocean.
Anyway, I hope these bits and thoughts are helpful to those interested in learning more. On the telescope itself- I can understand both sides of the argument. But on balance I think Hawaii (and Hawaii Island specifically) loses more than it gains by blocking the instrument. I'm a scientist, so that opinion is surely influenced by my profession, but something I observe is relatively few opportunities for economic or social self-determination in Hawaii- especially outside of Oahu; to me the telescope also represents diversitifaction away from tourism and military (both of which have known issues for locals). Folks in Hawaii tend to be against anything that is a change, but the status quo is not great for them, or improving on its own. Just my informed opinion.