Absolutely! Location does not guaranteed anything. The only case against US, four eyes... etc is that they have the power to shut it down easily so they can use it as a threat. Switzerland has, for years now, showed the same drive as any other country to do just that.

Now, I have seen very principled individuals in the US, I would say even more than in the Europe! It is not surprise that we see cases like Lavabit where a right owner chooses to close shop rather than compromise its customers. I hope GrapheneOS will do the same.