I’m not sure that’s the case. I’m sure any country that blocks your end-user access to that server would also be blocking your local servers’ access to it too, after all its all just http traffic to the firewall.

I suspect that any differences in content you’re seeing between servers at the moment are down to the massive load that they’re under. Generally the federation functionality seems to be the most processor-intensive and fragile part of the setup.

It will be interesting to see how quickly the whole fediverse gets blocked by strict countries now…

This will be nearly impossible. Popular instances can be blocked but someone can simply create a new small one each time. It is eternal cat and mouse. Censorship by the country where it is hosted however will be effective for that instance but no other.