Finland is not one high trust society. Its two. They almost had a civil war back then when the sovjets nearly invaded and society split in two high trust societies (left - stalin collaborateurs) and right (finland patriots). There are still towns were the sides do not shop in the same super market.
I agree with you, but no society functions at the “0” end of that spectrum. That’s anarchy. Even Mad Max / Book of Eli level dystopia still had nonzero trust in local warlords as institutions.