I think you're looking for an argument, but I'm not. It's always been possible for a country to turn a visitor away (talk to folks who've been to Israel and try to travel to an Arab country …), and that does have consequences which one must be prepared for.

I'm certainly not going to claim that 'all your password are belong to us!' is a good or desirable policy, but I am going to claim that anyone who travels between countries must be prepared to deal with the local regime, no matter how ill-conceived its rules may be.