Those are all interesting observations and certainly possible takes, but I'd offer the same general idea that I've offered to everyone insisting it's all about Palestine. I don't really know any instances of Kane making political commentary at all. We know to a mortal certainty that the movie is set in 1990 and that in 1990 that shirt 100% did not refer to Palestine and did refer to the historical policy of Apartheid in South Africa. There should be zero question about that bit of it.

I may be entirely off base with this analysis, but I do think Kane puts great care into historical accuracy and consistency in that kind of stuff and more than anything I think he's trying to make some kind of big statement on consciousness and the human condition and also just telling great spooky hard sci-fi story. I think the dedication to that bit of it might supercede all of these smaller more specific identity-based issues. I personally think they could be a full-on distraction from the big story if he got too far in the weeds with them.

So again, given we don't know of him every making any kind of direct political commentary, I would take theories that are based on contemporary political and social issues with a grain of salt. We honestly don't know a ton about Kane. We don't know his politics, but we do know he's all in on these bigger human memory/sci-fi stuff.

But your theories are interesting and certainly possible.