I think I agree with your core point here. In an ideal world, anyone who would be affected by a policy (directly or indirectly) should be allowed to have a say

I think I agree with your core point here. In an ideal world, anyone who would be affected by a policy (directly or indirectly) should be allowed to have a say in the policy. Citizenship seems to be a "good enough" bar for letting people in this country vote on matters of this country. And as I pointed out, any filter, including citizenship, is turned into a way remove voters who should otherwise have a say.