@nasser I like the concept that it's not a paradox at all, but tolerance is a peace treaty. That you get benefits from it if you also enforce its precepts. And lose it if you don't.
https://freethoughtblogs.com/atg/2017/08/11/tolerance-is-a-peace-treaty-not-a-moral-imperative/
We can say the same with openess. What we need is definition of a good neighbor, so we can punish bad neighbors efficiently.