I find this amusing, because it seems like Kagi's target audience dislikes this (politically polarized), and I as someone who is not Kagi's target audience likes this (politically neutral).
Wait, what? Their choice is specifically a politically neutral one, wouldn't that mean their target audience is a politically neutral one? Why is your impression that Kagi's target audience is politically polarized users? Been a paying user of Kagi for years, never got that impression.
FWIW, I don't think Kagi should remove or avoid indexing content from countries that invade others, because a lot of the times websites in those countries have useful information on them. If Kagi were to enact such a block, it would mean it would no longer surface results from HN, reddit and a bunch of other communities, effectively making the search engine a lot less useful.
Why is supporting Yandex, who are involved in Russian politics and linked to the ruling regime, a neutral decision? That is very much a political decision, in the same way that working with US tech companies is a political decision. You need to decide what you're willing to tolerate and where your ethical lines are drawn; the alternative isn't neutrality, it's nihilism.
Politics is not just a 1 dimensional line.